April, 1930
ISDCSTRIAL A N D ENGINEERING CHE.WISTRY
iron, malleable iron, and steel castings; Section 9 to iron and steel fabrication; Section 10 to welding; Section 11 to the subject of water requirements, and particularly the disposal of waste water. Section 12 is concerned with cement pioduction, and Section 13 with various physical-chemical and other tables. All in all, the handbook is most excellent and contains various types of information which would generally require a search through a number of reference books, and is of great value, not only to the iron and steel metallurgist, but to chemists and operators interested in iron and steel.-C. H. HERTY,JR. Bericht de; Schimmel & Company. Aktiengesellschaft Miltitz bz. Leipzig uber iitherische Ole Riechstoffe u. s. w. JubilaumsAusgabe, 1929. 326 pages. Published by Schimmel & Company, A. G., Miltitz, Germany, 1929. Ever since its inception in 1886, “Die Berichte” published by Schimmel & Company have been valued by chemists interested in volatile essential oils and synthetic aromatic chemicals. The present report is the more interesting because it contains historical and scientific data in connection with the achievements accomplished by the firm for the past hundred years, and is divided as follows. The historical data have been prepared by Karl Fritzsche, a member of the firm. A history of the analytical work carried on by the laboratory of the firm has been prepared by Eduard Gildmeister, an authority on the subject. The work carried on in the laboratories of the company is described by Heinrich Wienhaus, who historically records the investigation of a large number of volatile oils, describing their chemical constituents. Of great interest will be found a list of chemical constituents contained in a large number of volatile oils and flower products investigated by Schimmel & Company up to the publication of this report in August, 1929. This and a list of books on the subject in the company’s library concludes Part I of the report. Part I1 contains reports by Eberhard Brauer on lavender oil and on boiling points of binary compounds of some chemical substances contained in volatile oils. A short, but very interesting, article by Otto Huthig shows the presence of normal propyl alcohol in technical allyl alcohol. An article by Theodor Klopfer on the terpene and sesquiterpeneless oils will also be found useful. A simple process for obtaining fatty acids from its higher homologs is described by Fiank Rochussen. A very interesting and useful chapter on the physical and chemical determination of flower products, such as concretes, etc., is contributed by Heinrich Walbaum and Anton Rosenthal. A method of producing furfural conipounds and their chemical characteristics is contributed by Heinrich Wienhaus and Hans Leonhardi, and in another chapter Heinrich Wienhaus and Hellmut Scholz describe new crystallized compounds found in volatile oils. The condensation of fatty aldehydes with malonic acid in connection with the building up of new chemical compounds is described by Bruno Zaar. Any chemist interested in the industry, whether as a manufacturer or user of volatile oils and flower products, will find this report a valuable addition to his library. The data contained therein are historical and thoroughly scientific, and show in a clear and concise manner the extent of research carried on by Schimmel & Company especially during the past thirty-five or forty years.-S. ISERMANN Fortschritte in der anorganisch-chemischen Industrie dargestellt on Hand der deutschen Reichs-Patente. Compiled by ADOLF BRAUERand J. D’ANs. Dritter Band-19241927. Zweite Abteilung, pages 301-716. Dritte Abteilung, pages 717-1152. Prepared with the assistance of JOSEF REITSTOTTER and Collaborators. Verlag von Julius Springer, Berlin. This is a continuation of the compilation and classification of German patents begun some years ago by Brauer and D’Ans. The same presentation used heretofore has been retained. Each section is preceded by a brief list of literature references and a sketch pertaining to the subject under consideration. This is followed by a classified list of the German patents on this subject which have appeared in the years under review. For the most part the patent specifications and claims are given verbatim, The contents of Part I1 are as follows: Sulfuric Acid; Hydrogen Sulfide and Alkaline Sulfides; Sulfites, Thiosulfates, Hydrosulfites and Chlorine-Bearing Sulfur Compounds; Nitrogen and Noble Gases; Nitric Acid, Nitrogen Oxides, and Alkali Nitrates; Ammonia and Its Compounds; Cyanogen and Its Compounds; and Nitrides, Hydroxylamine, Hydrazine, Hydrazoic Acid.
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The contents of Part I11 are a5 follows. Phosphorus and Its Compounds; Artificial Fertilizers; Arsenic, Antimony, Vanadium and Their Compounds; Carbon, Carbon Compounds; Carbides; Silicon and Its Compounds; Boron and Its Compounds; Titanium Compounds; Salt Industry; Potash Salts; Soda Industry; Compounds of the rare Alkali Metals. This work gives in compact and convenient form the significant German patents on the subjects listed in the preceding two paragraphs, over 800 being included in the two volumes in question. The paper, format, and typography are excellent, and this volume should prove exceedingly useful to workers in the inorganic chemical industry, as those who have used preceding volumes ZIESBERG of this work already know.-FRED
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Die Riechstoffe und ihre Derivate. Edited by ALFREDWAGNER. Band I-Aldehyde. Zweite Abteilung: Aldehyde der alizyALFONS&I. BURGER, klischen Reihe. BY ALFRED WAGNER, AND F. ELZE. 361 pages. A. Hartleben, Vienna and Leipzig, 1929. Price, 25 marks. The contemplated scope of this treatise is to cover, in Volume I, the aldehydes; Volume 11, the phenols and phenolethers; Volume 111, alcohols and ethers. Each volume is to be divided into three parts. The first part of Volume I covered the aliphatic aldehydes [reviewed by Nelson, IND.ENG. CHEM.,21, 1151 (1929)l. The second part, which is the subject of the present review, is entitled “Aldehydes of the Alicyclic Series;” while the third part, which is to appear in the early part of 1930, is to cover “Aldehydes of the Aromatic Series.” As a m:ter of fact, this second part should bear as its main title Cyclic Aldehydes,” for only about 85 pages are given to the strictly alicyclic series, about 235 to aromatic, and about 30 pages to heterocyclic aldehydes. ’ I he treatment follows the same arrangement as has been used for the aliphatic aldehydes. In case of important aldehydes there is always first a historical sketch, frequently accompanied by extensive citations from the original literature. Then follow full data in regard to constitution, occurrence, formation, and mzthods of preparation and manufacture, physical properties and chemical behavior, important derivatives ; and usually an extensive table to facilitate the survey of synthesis, constitution, and derivatives. The citations to original literature are abundant and go up to 1929. To mention but a few of the individual compounds treated: cyclopropyl-, cyclobutyl-, cyclopentyl-, cyclohexyl-formaldehyde, the corresponding acetaldehydes, perillaldehyde, phellandral, farnesol, cinnamic aldehyde, cryptal, benzaldehyde, and the various toluyl aldehydes, furfural, etc. This work should prove valuable, not only to those who are interested in essential oils and perfumes, but also as a reference book, on a variety of organic substances, in any library.--M. GOMBERG Metallkeramik. Die Herstellung von Metallkarpern aus MetallSKAUPY.viii 60 pages. 16 X 24 pulvern. BY FRANZ cm. Verlag Chemie, G. m. b. H., Berlin, 1930. Price, paper, 6 marks. During the last twenty-five years a technic has been developed for the preparation of metal bodies of the more refractory metals which consists in compressing and heating their powders a t temperatures below the melting point. The pamphlet on review is a treatise dealing with this technic and contains chapters on the preparation of the metal powders, methods of studying the particle size, and the various methods which have been employed to obtain the final metal with or without the use of a binder. It also contains several chapters on tungsten, molybdenum, and tantalum, and the general procedure employed for the preparation of bonded tungsten carbide. Students or technicians interested in the general processes treated in this pamphlet will find it a valuable addition to the literature of the subject,C. W. BALKE
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Correction In the review of the book entitled “Diatomaceous Earth,” by Robert Calvert, which appears on page 302 of the March, 1930, issue, a misprint occurs io the sixth line of the second paragraph in the word “understood,” which should be “understated.” The last sentence of this paragraph should then read: “While taking away some of the apparent mystery of this industry, he has not understated the complexity of the development, manufacture, and use of diatomaceous silica products, and particularly of filter-aid materials.”
