4-20 



THE POPULAR SCIENCE MONTHLY. 



David Starr Jordan and David Kop Goss ; 

 a review of the Seiceniclce, by Prof. Jordan 

 and Carl IT. Eigenmann ; a paper on inter- 

 nal parasites of fishes, by Edwin Linton ; and 

 a report on Medusae, by J. Walter Fewkes, 

 all but the first of these being illustrated. 

 A large number of reports from the vessels 

 and stations of the Commission are printed, 

 and the following papers from foreign sources 

 are included in the volume : " On the Fish- 

 cultural Establishments of Central Europe," 

 by E. Bettoni and D. Vinciguerra ; " Chemi- 

 cal Composition of Food Products," by P. 

 Kostytscheff ; " Cases of Poisoning caused 

 by Spoiled Codfish," by Dr. E. Mauriac, and 

 " Notes on the Norwegian Fisheries of 1885," 

 by A. N. Kiaer. There is also a list of sta- 

 tions at which dredgings have been made in 

 the Atlantic and Arctic Oceans from 1867 

 to 1887, by Sanderson Smith. The list is 

 accompanied by five charts. 



A translation of a series of essays by the 

 Baroness Marenholtz - Buelow, setting forth 

 Froebel's educational system, has been pub- 

 lished under the title The Child and Child- 

 Nature (Bardeen, $1.50). It describes the 

 nature of the child, his needs, and the effects 

 of training upon him. An account of Froe- 

 bel's method is given, and this is followed 

 by some of the exercises and translations of 

 the songs which he devised for teachiug the 

 child's relations to nature, to mankind, and 

 to God. A bibliography of Froebel is ap- 

 pended, and an index has been added to the 

 American edition. 



Dr. R. von Krafft-Ebing's Experimental 

 Study in the Domain of Hypnotism has been 

 translated into English by Charles G. Chad- 

 dock, M. D. (Putnam, $1.25). It is an ac- 

 count of a case which has excited much 

 interest in Gratz, and comprises the prelimi- 

 nary history of the patient, a record of the 

 course of her hystcro-epileptic attacks, and 

 a transcript from Prof. Krafft's daily note- 

 book of hypnotic experiments upon her. 



Evolution of the Electric Incandescent 

 Lamp, by F. L. Pope (H. Cook, Elizabeth, 

 N. J.), is a collection of extracts from rec- 

 ords of courts and of the Patent - Office, 

 newspaper files, and transactions of scien- 

 tific societies bearing upon the question 

 whether Edison or Sawyer and Man deserve 

 the credit for the employing of a carbonized 

 filament of organic material in the incan- 



descent lamp. The book is illustrated with 

 cuts of apparatus. 



A beginner's text-book of Iron and Steel 

 Manufacture has been prepared by Arthur 

 H. Hiorns (Macmillan, $1), designed to give 

 a knowledge of the principles underlying 

 the processes of this industry. In the early 

 chapters the substances used or produced in 

 smelting are defined, the ores of iron are de- 

 scribed, and the chemistry of the subject is 

 explained. Then follow descriptions of the 

 usual methods of extracting and refining the 

 metal, and of the furnaces, hammers, and 

 rolls employed in these operations. Iron 

 casting, tinning, and galvanizing are also 

 described. The processes in the production, 

 tempering, and testing of steel are set forth 

 in like manner. Questions are appended to 

 each chapter for the use of students. 



No. 96 of Van Nostrand's Science Series 

 is on Alternate-Current Machinery, and com- 

 prises a paper read by Gisbert Kapp before 

 the Institution of Civil Engineers, London, 

 with the discussion upon it. Of the appa- 

 ratus which may be properly included under 

 his title, the author deals especially with 

 alternators, transformers, and motors. The 

 volume is illustrated with forty-three dia- 

 grams. 



Since the first edition of the Manual of 

 Assaying Gold, Silver, Copper, and Lead 

 Ores, prepared by Walter Lee Brown (E. H. 

 Sargent & Co., $2.50), was noticed in this 

 magazine, the book has been increased from 

 318 to 487 pages. Other changes as given 

 by the author are, " the stating of all charges 

 in assay tons, grammes, and grains ; detailed 

 charges in the scorification process ; full 

 notes on the colors and appearances of the 

 scorifiers (with a colored plate) and cupels 

 after work ; the expansion of the crucible 

 process from nine to almost ninety pages; 

 more complete articles on the assay of gold 

 and silver bullion, and the volumetric analy- 

 sis of copper ores ; and, finally, the issuance 

 of the book in flexible covers." The present 

 (third) edition is but little changed from the 

 second. 



The little book by the late Walter Bage- 

 hot, embodying a Flan for Assimilating the 

 English and American Money, first pub- 

 lished in 1869, has been reissued in view 

 of an expected revival of interest in the 



