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Economics of surface coatings on metals are discussed with emphasis on surface preparation, especially when large scale coating operations are conducted. Relative cost and other parameters affecting the choice between manual and machine blasting are considered, including the area cost of surface preparation, health and safety factors, incidental pollution, and other variations. Advantages of high build surface and multi‐purpose primer application are related along with comparisons of cost between initial and manual recoating of structures after erection. Importance of proper coating maintenance is emphasised. Economic case histories are given, including large scale surface preparation of tank plates and piping, differences between sand abrasive and centrifugal blasting, factors related to intercoat adhesion, cost of Zn rich with epoxy or alkyd topcoats, and the high cost of repainting when scaffolding is necessary. Regulations on surface preparations, ecological controls, and safety are discussed. Two coat simplified systems are recommended, along with automatic and semiautomatic surface preparation when the size of the job makes either one possible. Tabulated data on area costs of various modes an locations for surface preparation and coating costs for various metal configurations are provided.

The relatively complex corrosion mechanism of aluminium has been studied by several authors. Corrosion of aluminium occurs only when the metal protective oxide layer is damaged and when the repair mechanism is prevented by chemical dissolution. Polarization methods have been extensively used to investigate the mechanism of localised corrosion and processes that lead to localised corrosion. The potential‐pH diagrams are shown in Fig. 1A. In using potentiostatic techniques, the potential is controlled and current is determined as the independent variable. Potentiostatic and potentiody‐namic techniques have been applied by several authors to study the corrosion of aluminium in different environment. Both anodic and cathodic polarization curves have been used to interpret the kinetics of pitting corrosion of aluminium in chloride containing environments. Both the anodic and cathodic process are complex and the interpretation of the anodic and cathodic polarization curves of aluminium is often tedious. The situation arises partly from the fact that the role of film formation on the kinetics of corrosion is not clearly understood. Previously there is not established mechanisms of initiation and propagation of pits in aluminium and its alloys. Several parameters such as pitting potential, breakdown potential, active passive transition potential, related to the pitting process of aluminium, are full of controversy. Numerous references on the above can be found in literature).

The discovery of the Hall‐Herqult process for the manufacture of aluminium made it possible to obtain the metal in large quantities. Soon it attained the position of a major industrial metal due to its lightness combined with strength, capacity to take up a high polish, excellent conductivity of heat and electricity. Moreover it gives a wide range of extremely valuable alloys with diverse elements such as copper, magnesium, nickel, silicon, zinc, etc.

Introduction Amines have been known for a number of years as effective corrosion inhibitors. Their efficiency is attributed to the presence of the nitrogen atom acting as the active centre for the adsorption of organic molecules on the metal surface. Several aliphatic and aromatic amines have been reported to serve as effective corrosion inhibitors for iron and steel in acidic solutions. The nitrogen‐containing corrosion inhibitor exhibited a very good performance in hydrochloric acid, but very little effect in sulphuric acid. Hence a study of the mechanism by which the corrosion rate is reduced when these organic compounds are added to solutions is of interest. In this study the inhibition of corrosion of mild steel in HCl and H2SO4 has been studied using different electrochemical techniques. Results are reported and discussed.

Introduction The sulphonate molecule has become one of the most versatile surface active chemicals available to industry. Its value as rust or corrosion inhibitor in a variety of areas has been demonstrated many times over in field and laboratory tests. A review of these various applications has been published.

THE occasional moving of stock in open‐shelf libraries creates a sense of novelty in the reader. We experienced this recently in entering a library familiar to us where we found the Literature section had been moved and reduced in order to make space for the increase in the Applied Arts class. Further the librarian declared that there was no excessive demand for much of modern poetry, but although the library has the poems of T. S. Eliot in several copies, none was on the shelves or at the moment available. One wonders if poetry that is “modern” has been read by the majority in the past half‐century; it is an art form, often lacking substance and therefore caviare to the ordinary reader. The poets of today with such exceptions as Walter de la Mare and Alfred Noyes, neither of whom is young, have not increased their chances by their deliberate or unconscious obscurity. Even the said‐to‐be most influential of the modern, T. S. Eliot, in such a work as Ash Wednesday, topical this month of course, is completely unintelligible, in spite of the almost divine music of some of its lines, to many quite intelligent and habitual readers. Our librarian declared that readers remain for Coleridge, Keats, Shelley, Tennyson, Browning and even for Longfellow, in short for the real classics. This conclusion is borne out by the examination of a day's borrowings a year ago at Manchester. “Modern poetry,” its Report tells us, “seems to be departing from the range of the general reader into some esoteric mystery of its own,” and while the older classics, Browning, Chaucer, Donne and Tennyson were borrowed to the extent of four copies each, other poets were less in demand. Altogether 21 works of individual poets and 16 anthologies went out that day. A small array but, if continued through the year, it meant 11,100 works which are not a negligible number.

DESPITE the critics who arise to condemn the onward march of the Public Library movement there can be little doubt that after the settling process has been gone through it will be more seriously reckoned with as a factor within our social evolution than at present; and meantime it were well to remember that fine definition of Dickens in regard to the Public Libraries of fifty years ago, and to see whether it was a prophecy or a realisation when he said, “It is grand to know that … the immortal mechanism of God's own hand, the mind, is not forgotten in the din and uproar, but is lodged and tended in a palace of its own.” Let us extend the meaning and see how the Public Library movement has grafted itself upon the mind of the great public by whom it is supported, and how it stands in regard to the authorities by whom it is controlled, and then, taking this position, let us ask the two questions: “How does it express itself popularly, and do people look at it in the light which Dickens did?”

In this chapter, the authors interrogate the structures, natures, processes, and variables that shape globalized collegiate desegregation. The authors pay attention to the history of segregation in South African culture, then proceed to current efforts to dismantle and rebuild the country’s educational enterprise. Drawing parallels with segregation policy in the United States, the authors argue that both nations may draw from global lessons about systemic global anti-Black oppression and its structural forms (e.g., apartheid, inequities in higher education). More specifically, the authors ground arguments in an analysis of the linguistic hegemony that continues to inculcate the college-aspiring students of South Africa. Understanding fundamental desegregation characteristics of racial hegemonic nations (e.g., United States) vis-à-vis racial and linguistic hegemonic nations (e.g., South Africa) is imperative to increase understanding of democratization of educational systems throughout the world.

ANOTHER Annual Meeting has come and gone. It was scarcely to be expected that the meeting at Bradford would be a record in the number of members attending, seeing that it is only three years ago since the Association met in the neighbouring city of Leeds, and that Bradford cannot boast either the historical associations or the architectural and scenic setting of many other towns. For the most part therefore the members who did attend, attended because they were interested in the serious rather than the entertainment or excursion side of the gathering, which was so far perhaps to the advantage of the meetings and discussions. Nevertheless, the actual number of those present—about two hundred—was quite satisfactory, and none, we are assured, even if the local functions were the main or an equal element of attraction, could possibly have regretted their visit to the metropolis of the worsted trade. Fortunately the weather was all that could be desired, and under the bright sunshine Bradford looked its best, many members, who expected doubtless to find a grey, depressing city of factories, being pleasingly disappointed with the fine views and width of open and green country quite close at hand.

Hitherto, we have discussed the advisability of issuing a magazine, and have entered with some degree of minuteness into the underlying financial principles; we now have to consider the arrangement of the contents. So much controversy has raged over the question of classified versus dictionary or alphabetical cataloguing, that it will be unnecessary to recapitulate the pros and cons. On the whole, the classified method has met with most favour, and experience has taught us that it is undoubtedly the better for magazine purposes. In this, we are in accordance with nearly all librarians publishing magazines. Indeed, in magazine work, where as a rule only one entry is given to a book, the alphabetical method is inadequate. It resolves itself into an alphabetical list either under authors' names, or under catchword subjects which is useless in showing the relation of one book to another. A properly classified list—preferably classified according to some recognized systematic scheme—on the other hand, displays the accessions to the library much more effectively, and does fulfil the necessary function just mentioned.