OF the new volume of this important journal, no fewer than 216 pages are occupied by the fourth report to the Corrosion Committee by Drs. Bengough and Hudson and the subsequent discussion. The new report embodies the results of a very large amount of experimental work, and is distinctly helpful in regard to the immediate problem of extending the life of brass condenser tubes. A large array of new facts bearing on the baffling question of the mechanism of corrosion is also included, and illustrated by numerous plates. The authors favour the view that direct oxidation takes place without preceding electrolytic action. As Prof. Armstrong points out in the discussion, the theory of corrosion is in a disappointingly backward state, and no satisfactory explanation has yet been given of some of the most familiar facts. The report is a valuable one, and fully justifies the continuance of the work of the committee.

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DOI

https://doi.org/10.1038/104391a0

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