SCIENCE-ADVERTISEMENTS 



Marine Biological Laboratory 



Woods Hole, Mass. 



INVESTIGATION 



Eatir* Tmt 



INSTRUCTION 



July 3 to August 13 

 1918 



SUPPLY 

 DEPARTMENT 



Otma tbm Enlbw Yaar 



Fadllties for research In Zooloey, 

 Embryology, FbysioloEy and Bot- 

 any. Seventy-gix private labora- 

 tories, SlOO each for not over three 

 months. Thirty tables are avail- 

 able for beginners in researoh who 

 desire to work tmder the direotion 

 of members of the staff. The fee 

 for •ruoh a table is t£0.00 



Courses of labontory instruction 

 with lectures are offered in Inverte- 

 brate Zoology, Embryology, Physi- 

 ology and Morphology and Taxo- 

 nomy of the Algae. Each course 

 raquiree the full time of the student. 

 Fee, t50. A lecture course on the 

 Hiilesophical Aspects of Biology 

 and Allied Sciences is also oSerea. 



tWliTials and plants, preserved, liv- 

 lac and in embryonio stages. 

 Freserved material of all typea of 

 animals aad of Algae, Fungi, Liver- 

 worts and Moasss furnished for 

 danwork, or for the museum. 

 Urine material furnished in season 

 MM ordered. Price lists of Zoolo^oal 

 ■sd Botanical material sent on ap- 

 gieation. State which is derired. 

 Wm price Ests and all information 

 mwdinc material, addrssi 



OXO. U. GHAY, Curator. Woods Hole. Maa. 



Ill iBBul ■aBomscBMmt vHI be sen ton ^>pIieatioB te Tbe 

 Marins Bieletlial^ Labontory, Woods Hols, Mat, 



A DICTIONARY FOR 

 EVERY LIBRARY 



GOULD'S 



MEDICAL 



DICTIONARY 



(THE PRACTITIONER'S) 



Flexible Cloth, Marbled Edges, <I>7 7 c 



Round Corners ^ii,l u 



(With Thumb Index $3.25) 



71,000 Words 



Pronounced'-Defined— ^Derivation 



Includes many of the words of allied 

 sciences 



P. BLAKISTON'S SON & CO. 



Publishers PHILADELPHIA 



Catalogue of the Hemiptera of 

 America North of Mexico 



Excepting the 

 Aphididae, Coccidae and Aleurodidae 



By Edwaxd P. Van Duzee Cloth, $5.50 



The Yana Indians, by T. T. Wateiman 75 



The Language of the Salinan Indians, by J. Alden Mason ,75 



An Account of the Mode of Foliar Abscission in Citrus, by 



Robert W. Hodgson 10 



A Synopsis of the Bats of California, by Hilda W. Grinnell 2.00 



The Pacific Coast Jays of the Genus Aphdocoma by H. S. 



Swarth 20 



A Rapid Method for the Detection of Protozoan Cysts in 



Mammalian Faeces, by W. C. Boeck 05 



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 CALIFORNIA PRESS 

 Beikeley, CaUfomu 280 Madison Ave., New York 



The American Academy 

 of Arts and Sciences 



28 Newbury Street, Boston, Mass. 



Jttst issued. Proceedings, ToL 62, Kos. 9, 10, U.'^ 



52. 11. Crozier. W.J. — On the Pigmentation of a Poly- 

 clad. Pp. 723-730. 1 col. pi. May, 1917. 40 cents. 



52. 10. Thaxter, Eoland. — New Laboulbeniales, chiefly 

 Dipterophilous American Species. Pp. 647-721. May, 1917. 

 $1.00. 



52. 9. Bridgman, P. W. — The Electrical Resistance of 

 Metals under Pressure. Pp. 671-646. February, 1917. 90 cents. 



Other recent issue* of the Frooeedlsgs 



52. 8. Wheeler, William Morton. — The Mountain Ants 

 of Western North America. Pp. 455-669. January, 1917. $1.26. 



62. 7. Hitchcock, Frank Lauren.— A^ Classification' of 

 Quadratic Vectors. Pp. 369-454. 81.26 



62. 6. Wilson, E. B., and Moore, C. L. E. — Differential 

 Geometry of Two Dimensional Surfaces in Hyperspace, Pp. 

 267-368. November, 1916. 81.50. 



52. 5. Walton, A. C. — The 'Refractive Body' and the 

 ' Mitochondria ' of Ascaris canis Werner. Pp. 263-266. 2 pis. 

 October, 1916. 40 cents. 



62. 4. Pierce, George W.— Theoretical Investigation 

 the Radiation Characteristics of an Antenna. Pp. 18d-fi59, 

 October, 1916. SLOO. 



62. 8. Bridgman, P. W. — Polymorphism at High Fie» 

 snres. Pp. 89-187. July, 1916. $1.00. 



S2. 2. Bridgman, P. W.— The Velocity' of Polymoiphlc 

 Changes between Solids. Pp. 55-88. July, 1916. SO cents. 



62. 1. Thaxter, Roland.— New or Critical Species of 

 Chitonomyoes and Rickia. Pp. 1-54. June, 1916i 70 oent& 



