94: Scientific Intelligence. 



Laramie Beds of Montana ; by Elmer S. Riggs. Pp. 249-256, 

 with three plates. 



6. Carnegie Institution of Washington. — The following are 

 recent publications: 



No. 49. Heredity of Hair-length in Guinea-pigs and its Bear- 

 ing on the Theory of Pure Gametes; by W. E. Castle and 

 Alexander Forbes. Pp. 1-14. (No. 5 of Papers of the Sta- 

 tion for Experimental Evolution at Cold Spring Harbor, N. Y.) 



The Origin of a Polydactylous Race of Guinea-pigs; by W. E. 

 Castle. Pp. 14-29 (No. 175 of Contribution's from the Zoologi- 

 cal Laboratory of the Museum of Comparative Zoology at Har- 

 vard College, E. L. Mark, Director). 



No. 51. Studies on the Germ Cells of Aphids ; by N. M. 

 Stevens. Pp. 28, with four plates. 



7. Personal Hygiene designed for undergraduates ; by Alfred 

 A. Woodhull, A.M., M.D., LL.D. Pp. vii + 221. New York 

 (John Wiley & Sons), 1906. — This little book, the outcome of a 

 course of lectures given to undergraduate students at Princeton, 

 presents in simple language sound advice regarding the develop- 

 ment and care of the body. A few introductory chapters briefly 

 describing the general anatomy and physiology of the organ sys- 

 tems of the body are followed by chapters on physical culture, 

 fatigue, elimination of waste, bathing, clothing, food, tobacco and 

 alcohol. Careful reading of this book cannot fail to leave in the 

 mind of the student a better appreciation of the common rules for 

 hygienic living, and would in all probability increase his future 

 health and happiness. 



8. The Bulletin of the Imperial Central Agricultural Experi- 

 ment /Station, Japan. Vol. i, No. 1. Pp. 94. Nishigahara, 

 Tokio, December, 1905. — Japan has already forty-seven indepen- 

 dent agricultural experiment stations, and this new publication 

 will serve to make public the results of the investigations carried 

 on in them. The first number contains eleven articles, treating 

 largely of the action of mineral substances on vegetable growth, 

 or on bacterial action. 



Obituary. 



Dr. Ernst Schellwien, Professor of Geology at Konigsberg, 

 died on May 14th in his fiftieth year. 



