450 SGientijiG Intelligence. 



6. Practical Methods of Organic Chemistry ', by Gattermani^, 

 translated by W. B. Shobek, 8vo, pp. 830. New York, 1896 (The 

 Macmillan Company, price $1.60).— This book, designed for stu- 

 dents doing laboratory work in organic chemistry, has met with 

 a cordial reception in Germany, where this branch of instruction 

 has attained a high degree of development. Tt is therefore grati- 

 fying to notice the appearance of a satisfactory English transla- 

 tion of this valuable book. It will be an important aid to the 

 teaching of the subject to English-speaking students and will 

 doubtless find an extensive use in our universities. h. l. w. 



7. The Chemical Analysis of Iron ; by A. A. Blaie, third 

 edition, Svo, pp. 322. Philadelphia, 1896 (J. B. Lippincott Com- 

 pany). — This work is the recognized authority upon the analysis 

 of iron, steel, iron ore, slags, luels, etc., and it is indispensable in 

 laboratories where such analysis is practiced or taught. In the 

 new edition many minor changes and several important additions 

 have been made, so that it may be considered, as it purports to 

 be, " a complete account of all the best known methods." 



H. L. w. 



8. Physikalisch-chemische Propadevtih ^ by II. Griesbach, 

 Svo, erste Halite and zweite Halfte, 1 Lieferung, pp. 592 ; tlie last 

 "Lieferung" is to appear soon. Leipsic, 1895-6 (Wilhelm 

 Engelmann). — This text-book is designed to give a general view 

 of physical and chemical science, especially from a medical stand- 

 point. The book covers a very wide range of subjects, and these 

 are treated in such a manner that the reader has no need of 

 special scientific knowledge. There is much historical informa- 

 tion and numerous biographical notes concerning scientific dis- 

 coverers and investigators are given. There are also copious 

 bibliographical references. The book is accurate and modern, and 

 it furnishes a valuable source of information for many classes of 

 readers. h. l. w. 



9. On methods of determining the dryness of saturated steam 

 and the condition of steam gas ;'^ by Prof. Osborne Reyistolds. 

 — In certain recent attempts to ascertain the proportion of steam 

 and water in the fluid which enters a steam engine, by means of 

 what is called the wire-drawing calorimeters, the published 

 results show that there remains from to 5 per cent by weight 

 of water in the steam, after it has been drained by gravitation, 

 in the same manner as the steam on which Regnault's experi- 

 ments were made. This has necessarily excited great interest in 

 steam engineering, and is naturally welcome, as it apparently 

 brings the perlormance of the engines by so much nearer perfec- 

 tion. Although the result of these recent experiments appear to 

 show the condition of dry saturated steam to be other than that 

 on which Regnault's experiments were made, and from which the 

 present steam tables have been calculated, still these tables have 

 been used in deducing the percentage of water latent in the steam. 



* Abstract received from the author of a paper read before the Manchester 

 Xiterary and Philosophical Society, Nov. 3d, 1896. 



