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The journal of the Acoustical Society of America
April, 194o. ]
PUBLICATIONS RECEIVED.
543
although its value relates purely to society. It is the scientific mode of approach to new knowledge and new avenues of progress--this, the result of a study of science underlying the discovery of cosmic rays. The scientific ideas that came into human thinking through the development of the telescope and the microscope undoubtedly had much to do with the shaking off of the shackles of both religious and political authoritarianism and the establishment of religious, intellectual and political freedom. This paper is one that can be read with profit by almost everyone of average intelligence, and it admirably brings the lofty so-called pure scientific knowledge right down to a practical basis in-so-far as a social value is concerned. The other two papers on "Superpower Particles" and " T h e Earth's Magnetic Field and Cosmic-Ray Energies" relate in detail the stages by which the present position in knowledge has been reached, giving accounts of the experimental methods used, illustrated with many cloud chamber photographs as well as with diagrams, tables, and photographs of apparatus. To follow these of course requires a prerequisite of a general scientific training. Both of them take the form somewhat of a narrative which is exceptional in that not only facts and conditions are set forth during the various stages of progress but the direction of future work is indicated, by references to gaps in knowledge revealed, the need for proofs, etc. The work is an outstanding account of the method employed in this great discovery.
R. H. OPPERMANN. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA. Cumulative Index, Volumes I-IO. New York, American Institute of Physics. Price $3.00. After ten years the Society has published what will prove to be a most valuable key to its Journal. It gives a classed list of subjects to which reference is made in the Index. This is followed by a cumulative author index and then, in turn, comes an analytic index. This latter is divided into twelve subdivisions. An author index of contemporary literature on acoustics, as listed in the Journal, makes references to all articles which have appeared, in any publication, between April 1937 and April I939; this is followed by an analytic subject index covering data above referred to. The Index will make the volumes of the Journal still more useful.
PUBLICATIONS
RECEIVED.
The Tools of the Chemist, Their Ancestry and American Evolution, by Ernest Child. 220 pages, plates, illustrations, I6 X 22 cnls. New York, Reinhold Publishing Corporation, 194° . Price $3.50. Properties of Ordinary Water-Substance, by N. Ernest Dorsey. 673 pages, illustrations, tables, I6 X 24 cms. New York, Reinhold Publishing Corp., 194o. Price $15.oo. The Journal of the Acoustical Society of America, Cumulative Index, Volumes I-_~o. I3I pages, 20 X 27 cms. Price $3.oo.
New York, American Institute of Physics.
PUBLICATIONS RECEIVED.
543
although its value relates purely to society. It is the scientific mode of approach to new knowledge and new avenues of progress--this, the result of a study of science underlying the discovery of cosmic rays. The scientific ideas that came into human thinking through the development of the telescope and the microscope undoubtedly had much to do with the shaking off of the shackles of both religious and political authoritarianism and the establishment of religious, intellectual and political freedom. This paper is one that can be read with profit by almost everyone of average intelligence, and it admirably brings the lofty so-called pure scientific knowledge right down to a practical basis in-so-far as a social value is concerned. The other two papers on "Superpower Particles" and " T h e Earth's Magnetic Field and Cosmic-Ray Energies" relate in detail the stages by which the present position in knowledge has been reached, giving accounts of the experimental methods used, illustrated with many cloud chamber photographs as well as with diagrams, tables, and photographs of apparatus. To follow these of course requires a prerequisite of a general scientific training. Both of them take the form somewhat of a narrative which is exceptional in that not only facts and conditions are set forth during the various stages of progress but the direction of future work is indicated, by references to gaps in knowledge revealed, the need for proofs, etc. The work is an outstanding account of the method employed in this great discovery.
R. H. OPPERMANN. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA. Cumulative Index, Volumes I-IO. New York, American Institute of Physics. Price $3.00. After ten years the Society has published what will prove to be a most valuable key to its Journal. It gives a classed list of subjects to which reference is made in the Index. This is followed by a cumulative author index and then, in turn, comes an analytic index. This latter is divided into twelve subdivisions. An author index of contemporary literature on acoustics, as listed in the Journal, makes references to all articles which have appeared, in any publication, between April 1937 and April I939; this is followed by an analytic subject index covering data above referred to. The Index will make the volumes of the Journal still more useful.
PUBLICATIONS
RECEIVED.
The Tools of the Chemist, Their Ancestry and American Evolution, by Ernest Child. 220 pages, plates, illustrations, I6 X 22 cnls. New York, Reinhold Publishing Corporation, 194° . Price $3.50. Properties of Ordinary Water-Substance, by N. Ernest Dorsey. 673 pages, illustrations, tables, I6 X 24 cms. New York, Reinhold Publishing Corp., 194o. Price $15.oo. The Journal of the Acoustical Society of America, Cumulative Index, Volumes I-_~o. I3I pages, 20 X 27 cms. Price $3.oo.
New York, American Institute of Physics.