SCIENCE— ADVERTISEMENTS 



Marine Biological Laboratory 



Woods Hole, Mass. 



INVESTIGATION 



EatiT* Year 



INSTRUCTION 



July 3 to August 13 

 1918 



SUPPLY 

 DEPARTMENT 



0»« tba Entlt* Ymt 



Facilitiee for research in Zoology, 

 E^bryolosy, Vi^taology and Bot- 

 any. SeTenty-fiiz private labora- 

 tories, ilOO each for not over three 

 months. Thirty tables are avail- 

 able for beginners in research who 

 desire to worlc under the direction 

 of members of the staff. The fee 

 for such a table is f 50.00 



Courses of laboratory inatraotion 

 with lectures are offered in Inverte- 

 brate Zoology, Embryology, Physi- 

 ology and Morphology and Taxo- 

 nomy of the Alg^. Each course 

 nquires the full time of the student. 

 Fee, S50. A lecture course on the 

 Philosophical Aspects of Biology 

 and Allied Soianoes is also offered. 



Animal. Bnd plants, preserved, Ut- 

 Inc and in embryonio stages. 

 Preserved material of all ^es of 

 animals and of Algae, Fungi, Liver- 

 worts and Mosses furnished for 

 eiasswork, or for the museum. 

 Uring material furnished In season 

 ■s ordered. Frioe lists of Zoologioal 

 ■nd Botanical material sent en ap- 

 pUeation. State whichia dedred. 

 Far price tista and all information 

 regawing material, addresi 



QEO. M. OBAT. Coiater. Wood* Hole, Maa. 



Th* aasiul aiiBeimsemeBt will be sen too application to Tha 

 DInotor, Marine Blologisal Laboratory, Woods Eols, Mass. 



THE YANA INDIANS 



By T. T. Waterman 1.75 



YAHI ARCHERY 



By Saxton T. Pope 75 



Changes in the Chemical Composition of Grapes During 

 Ripening, by F. T. Bioletti, W. V. Cruess, and H. 

 Davi 25 



A New Method of Ertraoting the Soil Solution (A Pre- 

 liminary Commurticalion) by Chas. B. Lipman 05 



Clans and Moieties in Southern California, by Edward 



Winslow Gifford 75 



Abscission of Flowers and Fruits in Solanaceae, with 



special reference to Nicotianat by John N. Kendall 85 



The Franciscan Sandstone, by E. F. Davis 50 



The University of California issues publications in the follow- 

 ing series among others : Agricultural Sciences, American 

 Archaeology and Ethnology, Botany, Economics, Entomology, 

 Geography, Geology, Mathematics, Pathology, Physiology, 

 Psychology, Zoology, Memoirs of the University of California, 

 Bulletins and Publications of the Lick Observatory. 



Complete lists of titles and prices will be sent on request. 



UNIVERSITY OF CAUFORNIA PRESS 

 Berkeley, California 280 MadisoD Ave,, New Yoik 



YOUNG'S 



LESSONS IN ASTRONOMY 



Revised Edition $1.40 



Interesting and not too technical in its 

 method of presenting the subject, this book 

 offers an up-to-date, brief course in elementary 

 astronomy, requiring no advanced mathe- 

 matics. In addition to the large number of 

 excellent illustrations and diagrams, there is 

 a series of four star maps. The Appendix 

 gives important facts regarding astronomical 

 instruments, and convenient tables of data 

 valuable for the beginning student. 



Ginn and Company 



Boston Atlanta 



New York DaUaa 

 ^ Chicago Columbos 

 London San Francisco 



Cookmg Class attKe 

 Soutli Dakota State College 



are using gas made by 



The "Detroit" 



Combination Gas Machine 



for supplying gas in Departments of 



Domestic Science 

 Chemistry and Physics 



(Over 30,000 in daily use) 



Laboratory work can be done better, 

 quicker and cheaper by using this gas. 

 Ask for descriptive catalog and names 

 of users in your vicinity. 



Detroit Heating & Lightmg Co. 



612 Wight St. Detroit, Mick. 



Eit. 1 868 



