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The purpose of this paper is to identify and define the certification lifecycle of laser powder bed fusion for aerospace applications from equipment acquisition and installation to production, part acceptance and continuous improvement activities.

A top–down systems engineering approach is performed consisting of concept development, requirements engineering and systems architecting. This approach is taken from the perspective of a production organization.

A certification roadmap is proposed that references industry requirements at the relevant phases of the roadmap. Each phase of the roadmap acts as a decision gate for progression to the next.

Qualification and certification of metal laser powder bed fusion is currently a challenge within the aerospace industry. From an aerospace point of view, the qualification and certification of this relatively new manufacturing process should not have to be any different from traditional manufacturing processes, although with extensive quality control and regulatory oversight. This paper proposes a means for fulfilling these requirements chronologically and provides guidance on ensuring such quality control throughout the manufacturing system lifecycle. This roadmap provides insight into the qualification and certification of laser powder bed fusion for aerospace applications and provides value for future industrial feasibility studies.

GLASGOW was later by about one hundred and thirty years than some of the Scotch towns in establishing a printing press. Three hundred years ago, though Glasgow contained a University with men of great literary activity, including amongst others Zachary Boyd, there does not appear to have been sufficient printing work to induce anyone to establish a printing press. St. Andrews and Aberdeen were both notable for the books they produced, before Glasgow even attempted any printing.

EPPIE ELRICK, William P. Milne's Aberdeenshire tale of the '15, first appeared in serial form in the Buchan Observer, running from 19 October 1954 to 6 September 1955. It was then published by Scrogie of Peterhead, as a book of 284 pages, before the end of the year. Another impression was issued in the following year.

OWING to the comparatively early date in the year of the Library Association Conference, this number of THE LIBRARY WORLD is published so that it may be in the hands of our readers before it begins. The official programme is not in the hands of members at the time we write, but the circumstances are such this year that delay has been inevitable. We have dwelt already on the good fortune we enjoy in going to the beautiful West‐Country Spa. At this time of year it is at its best, and, if the weather is more genial than this weather‐chequered year gives us reason to expect, the Conference should be memorable on that account alone. The Conference has always been the focus of library friendships, and this idea, now that the Association is so large, should be developed. To be a member is to be one of a freemasonry of librarians, pledged to help and forward the work of one another. It is not in the conference rooms alone, where we listen, not always completely awake, to papers not always eloquent or cleverly read, that we gain most, although no one would discount these; it is in the hotels and boarding houses and restaurants, over dinner tables and in the easy chairs of the lounges, that we draw out really useful business information. In short, shop is the subject‐matter of conference conversation, and only misanthropic curmudgeons think otherwise.

There are very few individuals who have studied the question of weights and measures who do not most strongly favour the decimal system. The disadvantages of the weights and measures at present in use in the United Kingdom are indeed manifold. At the very commencement of life the schoolboy is expected to commit to memory the conglomerate mass of facts and figures which he usually refers to as “Tables,” and in this way the greater part of twelve months is absorbed. And when he has so learned them, what is the result? Immediately he leaves school he forgets the whole of them, unless he happens to enter a business‐house in which some of them are still in use; and it ought to be plain that the case would be very different were all our weights and measures divided or multiplied decimally. Instead of wasting twelve months, the pupil would almost be taught to understand the decimal system in two or three lessons, and so simple is the explanation that he would never be likely to forget it. There is perhaps no more interesting, ingenious and useful example of the decimal system than that in use in France. There the standard of length is the metre, the standard of capacity the cubic decimetre or the litre, while one cubic centimetre of distilled water weighs exactly one gramme, the standard of weight. Thus the measures of length, capacity and weight are most closely and usefully related. In the present English system there is absolutely no relationship between these weights and measures. Frequently a weight or measure bearing the same name has a different value for different bodies. Take, for instance, the stone; for dead meat its value is 8 pounds, for live meat 14 pounds; and other instances will occur to anyone who happens to remember his “Tables.” How much simpler for the business man to reckon in multiples of ten for everything than in the present confusing jumble. Mental arithmetic in matters of buying and selling would become much easier, undoubtedly more accurate, and the possibility of petty fraud be far more remote, because even the most dense could rapidly calculate by using the decimal system.

A collection of essays by a social economist seeking to balance economics as a science of means with the values deemed necessary to man′s finding the good life and society enduring as a civilized instrumentality. Looks for authority to great men of the past and to today′s moral philosopher: man is an ethical animal. The 13 essays are: 1. Evolutionary Economics: The End of It All? which challenges the view that Darwinism destroyed belief in a universe of purpose and design; 2. Schmoller′s Political Economy: Its Psychic, Moral and Legal Foundations, which centres on the belief that time‐honoured ethical values prevail in an economy formed by ties of common sentiment, ideas, customs and laws; 3. Adam Smith by Gustav von Schmoller – Schmoller rejects Smith′s natural law and sees him as simply spreading the message of Calvinism; 4. Pierre‐Joseph Proudhon, Socialist – Karl Marx, Communist: A Comparison; 5. Marxism and the Instauration of Man, which raises the question for Marx: is the flowering of the new man in Communist society the ultimate end to the dialectical movement of history?; 6. Ethical Progress and Economic Growth in Western Civilization; 7. Ethical Principles in American Society: An Appraisal; 8. The Ugent Need for a Consensus on Moral Values, which focuses on the real dangers inherent in there being no consensus on moral values; 9. Human Resources and the Good Society – man is not to be treated as an economic resource; man′s moral and material wellbeing is the goal; 10. The Social Economist on the Modern Dilemma: Ethical Dwarfs and Nuclear Giants, which argues that it is imperative to distinguish good from evil and to act accordingly: existentialism, situation ethics and evolutionary ethics savour of nihilism; 11. Ethical Principles: The Economist′s Quandary, which is the difficulty of balancing the claims of disinterested science and of the urge to better the human condition; 12. The Role of Government in the Advancement of Cultural Values, which discusses censorship and the funding of art against the background of the US Helms Amendment; 13. Man at the Crossroads draws earlier themes together; the author makes the case for rejecting determinism and the “operant conditioning” of the Skinner school in favour of the moral progress of autonomous man through adherence to traditional ethical values.

WE offer our readers good wishes for 1939. We hope that every kind of library may be allowed in peace to pursue its development for the spreading of good reading, to the end that enlightenment and with it wisdom may prevail amongst our millions of readers. We hope too that it will be another year of progress in service, in good and deftly‐employed technique, in the development of the will to make libraries interesting, attractive, useful and indeed inevitable and essential to all men. For librarians we hope it may be a further stage in the promotion of their profession, of growth of their own faith in it, and of increase in the willingness of those who employ librarians in municipalities, counties, colleges and other places to recognize training and service with better pay, prospects and status. We know that appreciation will not give greater willingness to serve; we do know it will give greater happiness.

What are the value theories used by art economists which can help define the field as a unique research program? We categorize the research program in art economics in Lakatosian terms and find that art economists share a value system around art which is that art contains value beyond that of exchange. This difference introduces a “paradox” of value to be addressed (either implicitly or explicitly) by the art economist in practice, in that mainstream economics assumes value is realized through exchange only. We then survey the literature and find evidence to support this value paradox claim. We also find that the art economics research program does not adequately address the potentiality of the state using art as instrumental value and introduce political economy to factor in a self-interested state using art production as a means to reproduce and ideally expand state legitimacy and power in society. We then give two examples of art-statism in practice to illustrate the possibility of art’s instrumentality.

Analyses the career of William Zebulon Foster, a leader of the American Communist Party, and a three‐time candidate for President of the United States under that party′s banner. Foster rose from the slums of Philadelphia to earn the reputation of an accomplished labour organizer and then to embrace communist ideology. The poverty of his immigrant parents, and the endless series of dreary jobs he was forced to enter, beginning at age ten, nurtured his rebellious spirit and cultivated an antagonism towards capitalism. Emphasizes the evolution of his ideology from socialism to syndicalism and finally Marxism‐Leninism. William Foster found his vocation as an organizer of trade unions on behalf of the Communist movement. He was a prolific propagandist for and historian of the Party. Never deterred by tortuous twists and turns of the party line, he followed it faithfully and inflexibly until his death in Moscow in 1961.

The purpose of this important Act—the short title of which heads this article—is to consolidate and amend the laws for regulating the labelling and preventing the importation or sale of food and drugs which are unwholesome or adulterated or incorrectly or falsely described, and for regulating the labelling and preventing the importation or sale of disinfectants which are incorrectly or falsely described. The Act which was very badly needed and in the words of the Minister who introduced it “long overdue” came into force on the 1st January, 1930. It completely replaces five previous Acts which had been in existence for many years, were only operative in their respective provinces, and were unsatisfactory in other respects. So inadequate indeed were they that they may almost be said to have hindered rather than helped the Department whose business it was to administer them. Moreover, if further justification were needed, and for the moment ignoring the interests of the other units of population, it may be pointed out that the present population of European descent in the Union of South Africa is nearly equal to that of twice the population of the city of Glasgow; and that in it is to be found all the administrative knowledge and technical skill on which the future prosperity of the country must depend. The Acts repealed were the Sale of Food and Drugs and Seeds Act of the Cape of Good Hope Province No. 5, 1890; the Adulteration of Food Act, Natal No. 45, 1901; the Sale of Food and Drugs Ordinance, Orange Free State, No. 32, 1906; and two acts of the Transvaal, the Sale of Adulterated and Tainted Foodstuffs, Liquors, and Medicines, Law 29, 1896, and the Storage and Adulteration of Food Stuffs, Law 6, 1898. The last Report of the Department of Public Health issued under the old conditions was for the year ended 30th June, 1929. This states that the Acts which have been repealed were so inadequate and ineffective and contained so many loopholes and ambiguities that efficient administration was in many cases impossible and adulteration even of essential foodstuffs was rife. No power existed whereby standards could be laid down, or false description, or false labelling prevented. For example the Natal Act, which was modelled on 38 and 39 Vic. c. 68 and the Margarine Act, 1897, made no provision for prosecuting the importer of adulterated or unwholesome food stuffs and legal action was only possible if the goods were being sold, and then only the actual vendor could be proceeded against. Under the Cape Province law if an imported food stuff was suspect the consignment could be detained by order of the Department at the port of entry pending analysis or further examination. In the event of the consignment being reported against as unwholeso it might be destroyed. In no case was it allowed go into commerce. In Natal, however, no powe sted in law to detain at the port materials of doubtful purity. ’Up country they went. If the examination or analysis showed that they were unfit for consumption a sort of chase ensued along the railway line after perhaps a delay of a week or more, with, of course, a correspondingly lessened chance of tracing the offending material. The Natal and Cape Province Acts were both administered from Cape Town. Thus it has happened that a firm of importers has consigned one lot of the same kind of goods to a Cape Province port, the other to a Natal port. The reason for the detention of one lot and not the other was not understood, the administration was brought into discredit while public time and money were wasted, and public health perhaps endangered. The Transvaal Act was so generally worded that it gave no protection to the consumer, while that part of Law No. 6, which it embodied, stated that foods for sale must be kept in a special compartment—clean, well ventilated and not connected with a sleeping room or stable (italics ours). It may be remarked that the Transvaal, in which province of the Union this entirely inadequate law was in operation up to the end of last year, includes the Witwatersrand district and the city of Johannesburg with a population of 350,000, the third largest city in the African continent, and the second in importance in the Union. The administration of a code of public health laws in such relatively small and densely populated countries as England, France, or Germany presents in its details the strongest possible contrast to the administration of a similar code in such a country as the Union of South Africa. The former countries are inhabited by people of the same race and language, having the same traditions, mode of life, and standards of culture. They have been long settled. They are amply provided with every means for rapid transport and communication. The existence of large commercial and industrial populations in densely peopled areas has long ago forced on public attention the needs of public health. An enlightened public opinion can readily make itself heard and felt, and in general such opinion is in hearty agreement with authority when such authority enforces the law. But in the case of South Africa and in two out of the three other Dominions, we have to consider at the outset countries of continental dimensions, and in the particular case of South Africa of a continental character if regard be paid to the variety and different levels of culture exhibited by its inhabitants. The area of the Union of South Africa is in round figures nearly half a million square miles—approximately equal to the united areas of Great Britain, France, and Germany. The population is under eight millions, let us say equal to that of Greater London! Administrative difficulties are increased by the mere physical fact of distance and sparse population. It is on record that in some up country districts which are difficult of access supplies of the more grossly adulterated—and this is saying a good deal—or more improperly described articles of food have been sent, and as the officers of the Public Health Department cannot be everywhere at the same time the sale of such things can be effected with little risk of detection. But this by no means exhausts the difficulties that have to be overcome. Out of the total population only about 1,700,000, or roughly 20 per cent. are of pure European descent. About 70 per cent. are negroes, who at the time of settlement were in a state of neolithic culture. Nor are they capable of conforming to the standard of living of the European population. They would, one and all, undoubtedly revert to their primitive condition if the influence of Europeans was, conceivably, withdrawn; about 2½ per cent. are Asiatics; the rest are described as “mixed and other coloured.” Evidently the people of European descent are the only ones who are able properly to appreciate the importance of health laws, but some of them are the very people who, by their misdoings, give the most trouble to the health authorities. Perhaps no country in the world has made so rapid a material advance or altered so profoundly as South Africa has within living memory. It is common knowledge that the gold mining industry is primarily the cause of this. It has attracted a large white population, and negroes come in large numbers to do manual work of a simple kind for a term under contract. The fact that they are under contract brings them in a special way under the protection of the law. Held as they are by the terms of the contract to reside in the district where the work which they have contracted to do lies, far removed from their natural surroundings, and having the minds of children they present a problem of special anxiety to the authorities. They have to be controlled, but their physical welfare has also to be looked to. Their exploitation by a certain class of whites has to be prevented. The last report of the Department of Public Health for the year ending 30th June, 1929, states that while the conditions of the negroes working in the gold mines is on the whole satisfactory, in certain mines it is far from being so. Thus (p. 21) it is stated that the regulations regarding rations issued to the negroes were being “deliberately evaded or not properly carried out.” The anti‐scorbutic ration of germinated beans was found not to have been issued. The bread contained less than the 64 per cent. of wheaten flour, and more than the 36 per cent. of mealie meal as laid down by regulation, and this malpractice was of course difficult, if not almost impossible, to detect after the completion of the baking process. Moreover, such bread was to sight and taste grossly inferior. As bread is an essential food stuff, and as mealie meal is cheaper than wheat flour, this is as good an instance of the kind of adulteration referred to above as could be wished for. Moreover, it is of the meanest possible description. To cheat a negro working for a shilling a day out of his bread ! It is not surprising to learn that overcrowding in quarters which are verminous and in other respects insanitary is a concomitant, that typhoid fever is prevalent to “an excessive extent” in such mines, and that “definite action and improvement are called for.” It is, however, not only the negro working in the mines who is liable to have his inability to protect himself or his ignorance exploited to his own undoing. The negro living far away from these centres of “civilization” is liable to suffer. Thus, in the early part of last year complaints from Rhodesia and subsequent investigation by the Union police authorities showed that “several registered chemists and druggists most of them having businesses in Natal” were selling in the Union and exporting to Rhodesia various nostrums specially intended for the natives (p. 59). Prosecutions were instituted under the Public Health Act, 1919, and the South African Pharmacy Board is actively co‐operating with the authorities to suppress “these disgraceful practices.” These facts well illustrate the special difficulties that arise in the process of administering a public health act when degenerate whites exploit ignorant negroes. The Asiatics are on an admittedly higher intellectual level than the negroes, but their conception of what is right and fit from a sanitary standpoint are on a level with those that we generally associate with the Orient, and as they are apparently in full agreement with that eminent exponent of the principles of the Manchester School in this country who regarded adulteration as a mere form of trade competition, they are no better than some of their European competitors when they see a chance of making money, though swindling their neighbours may be an inseparable accident of the process. It will be readily understood that in such a vast and sparsely populated region with inhabitants having widely separated standards of culture, differences of tradition, requirements and rules of life administrative difficulties must be very great. Thus the last report states that eleven medical officers travelled—during the year the report refers to—over a distance of 77 thousand miles—52 thousand by rail, the rest by road. Four out of the eleven travelled a distance of about ten thousand miles each. Their duties included the systematic general inspection of local authority areas; mines, factories and works inspection—so far as health conditions were concerned; water supply; drainage; housing, including industrial housing; overcrowding and insanitary conditions. These duties, together with others not here specified, indicate the vast economic changes that have taken place in South Africa during the last forty years. These changes are largely in the direction of industrialization and that imposes heavier duties on the officials of the Health Department and still greater vigilance in applying regulations which while up to the level of the best European standard have to be applied in the interests of the mixed community we have described. Within living memory South Africa exported only the raw products of the farm; imported manufactured stuff was consumed for the most part by the white population of the coast towns; while its manufactures were such that “a manufactured article of local origin was a rarity that excited public comment.” The Witwatersrand started on its career in 1886, and under this impulse the country began to be rapidly opened up. The war of 1899–1902 resulted in the Act of Union in 1910 The Great War did the rest. In 1917 the Department of Public Health was formed. For two years it existed as a sub‐Department of the Department of the Interior. In 1919 the importance of its work was recognised and it was made a separate Department under its own Minister—the Minister for Public Health. Under the Minister is the Secretary for Public Health on whom falls the duty of administration. The work of the Department is, as would be expected, most varied Brief reference has already been made to this. It is in contact at many points with national life. Its activities are educational, medical and sanitary.