One of the most complete catalogues has been issued by H. W. Johns Manville

PUBLICATIONS.

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One of the most complete and up-to-date electrical catalogues issued is that of the H. W. Johns-Manville Company of New York. It is substantially bound in cloth and contains 349 pages, with a great many pictures, illustrating almost every line of the company's numerous products. The catalogue is divided up into 14 sections, each section treating some particular line of apparatus, such, for example, as trolley-wire hangers and pull-overs, strain insulators, tools, Noark enclosed fuses and devices, molded mica sockets, etc. This general method of classification enables one readily to turn to the part of the book desired upon consulting the table of contents. Each particular device is described briefly but concisely and a picture of it given, together with the code word, number, type letter and price. A complete telegraphic code is contained in section 13. In section 12 are given some good general information and a large number of reference tables, which will be appreciated by those who have the good fortune to receive one of the books. The number of the catalogue is 14, and it supersedes all previous issues.