- Email: [email protected]
The chemical engineering catalog
720
BOOK REVIEWS.
[J. F. I.
to investigate whether ultra-violet and infra-red rays could be applied to such investigations. In such cases, of course, pho:ography would be needed absolutely, as the phenomena are invisible to human vision. HENRY LEFFMAPI’N. THE CHEMICAL EXGINEERINC CATALOG. Ninth annual edition. Published by the Chemical Catalog Company, New York. Price, $10. This edition, uniform in price and form with the preceding one that was reviewed in the issue of this JOURNAL for October, 1923. includes collected, condensed and standardized catalog data of equipment, machinery, laboratory supplies, heavy and fine chemicals and raw materials used in the industries employing chemical processes. The method of leasing the volume is still followed, but it may be purchased outright for the price noted above. The present issue, as might be expected, is somewhat larger than its immediate predecessor, including 1082 pages. The same editorial control has been in force as in the former issues, and the same care has been taken in securing A new departure is the introduction of a correct and trustworthy information. section on Directory data, giving the sources of building materials, and it is hoped that manufacturers of this class of equipment will be induced to secure The general character and certain special space in the succeeding issues. features were set forth in the review of the eighth edition, and it is merely necessary to say that the work affords excellent evidence of the high development to which American chemical industries have attained and is a comprehensive picture of the various phases and purposes of these industries. HENRY LEFFMANN. ABRIDGEDSCIENTIFIC PUBLICATIONS OF THE RESEARC~I LABORATORYOF THE EASTMAN KODAK COMPANY. Vol. vii, 1923. Pamphlet, 139 pages with Published by the Eastman Kodak Company. indexes, illustrated, Svo. This pamphlet, now established as an annual issue, contains more than a score of papers on special researches in photographic physics and chemistry, with some special descriptions of new forms of apparatus. It includes papers of recondite nature as well as purely practical ones available to the ordinary amateur. The Eastman Kodak Company have been doing a large amount of research work in many departments of photosensitiveness, and publication in this The work is largely devoted to abridged form makes the data widely available. the study of the problems and phenomena of the silver halide emulsion which is, of course, the one that dominates the photographic field, but is to be hoped that before long the laboratory will find time to study at some length the photosensitiveness of other metallic compounds. The sensitiveness of the mercurous salts might yield some interesting results. There is, indeed, a wide range of photosensitiveness, although few substances have as yet been found to have it in such degree as to be available for practical purposes. HENRY LEFFMANN. WIRELESS POSSIBILITIES. By A. M. Low. 77 pages, several illustrations, 18mo. New York, E. P. Dutton and Company, 1924. Price, $I. This is one of a series entitled “To-day and To-morrow Series.” It consists of a discussion of various lines in which the modern radio broadcasting may be developed. The author allows himself considerable freedom of imagi-
BOOK REVIEWS.
[J. F. I.
to investigate whether ultra-violet and infra-red rays could be applied to such investigations. In such cases, of course, pho:ography would be needed absolutely, as the phenomena are invisible to human vision. HENRY LEFFMAPI’N. THE CHEMICAL EXGINEERINC CATALOG. Ninth annual edition. Published by the Chemical Catalog Company, New York. Price, $10. This edition, uniform in price and form with the preceding one that was reviewed in the issue of this JOURNAL for October, 1923. includes collected, condensed and standardized catalog data of equipment, machinery, laboratory supplies, heavy and fine chemicals and raw materials used in the industries employing chemical processes. The method of leasing the volume is still followed, but it may be purchased outright for the price noted above. The present issue, as might be expected, is somewhat larger than its immediate predecessor, including 1082 pages. The same editorial control has been in force as in the former issues, and the same care has been taken in securing A new departure is the introduction of a correct and trustworthy information. section on Directory data, giving the sources of building materials, and it is hoped that manufacturers of this class of equipment will be induced to secure The general character and certain special space in the succeeding issues. features were set forth in the review of the eighth edition, and it is merely necessary to say that the work affords excellent evidence of the high development to which American chemical industries have attained and is a comprehensive picture of the various phases and purposes of these industries. HENRY LEFFMANN. ABRIDGEDSCIENTIFIC PUBLICATIONS OF THE RESEARC~I LABORATORYOF THE EASTMAN KODAK COMPANY. Vol. vii, 1923. Pamphlet, 139 pages with Published by the Eastman Kodak Company. indexes, illustrated, Svo. This pamphlet, now established as an annual issue, contains more than a score of papers on special researches in photographic physics and chemistry, with some special descriptions of new forms of apparatus. It includes papers of recondite nature as well as purely practical ones available to the ordinary amateur. The Eastman Kodak Company have been doing a large amount of research work in many departments of photosensitiveness, and publication in this The work is largely devoted to abridged form makes the data widely available. the study of the problems and phenomena of the silver halide emulsion which is, of course, the one that dominates the photographic field, but is to be hoped that before long the laboratory will find time to study at some length the photosensitiveness of other metallic compounds. The sensitiveness of the mercurous salts might yield some interesting results. There is, indeed, a wide range of photosensitiveness, although few substances have as yet been found to have it in such degree as to be available for practical purposes. HENRY LEFFMANN. WIRELESS POSSIBILITIES. By A. M. Low. 77 pages, several illustrations, 18mo. New York, E. P. Dutton and Company, 1924. Price, $I. This is one of a series entitled “To-day and To-morrow Series.” It consists of a discussion of various lines in which the modern radio broadcasting may be developed. The author allows himself considerable freedom of imagi-