SCIENCE-ADVERTISEMENTS 



Marine Biological Laboratory 



Woods Hole, Mass. 



INVESTIGATION 

 Eatiro Year 



INSTRUCTION 



July 3 to Ausrust 13> 

 1918 



SUPPLY 



DEPARTMENT 



Open the Entire Year 



Facilities for rescach in Zoology, 

 Embiyology, Physiology and Bot- 

 any. Seventy-six private labora- 

 tories, SlOO each for not over three 

 months. Thirty tables are avail- 

 able for beginners i n research who 

 desire to work under the direction 

 of members of the staff. The fee 

 for such a table is S50.00. 



Courses of laboratory instiuction 

 with lectures are offered in Inverte- 

 brate Zoology, Embryology, Physi- 

 ology and Morphology and Taxo- 

 nomy of the Algae. Each course 

 requires the full time of the student. 

 Fee, S50. Alecture course on the 

 Philosophical Aspects of Biology 

 and Allied Sciences is also offered. 



Animals and plants, preserved, liv- 

 i ng, and in embryonic stages. Pre- 

 served material of all types of 

 animals and of Algae, Fungi, Liver- 

 worts and Mosses furnished for 

 classwork, oi for the museum. Liv- 

 ing material furnished in season 

 as ordered. Price lists of Zoological 

 and Botanical materia 1 sent on ap- 

 plication. State which is desired. 

 For price lists and all information 

 regarding material, address 



GEO. M. GRAY, Curator, Woods Hole, Mass. 



The annua 1 announcement will be sent on application to The 

 Director, Marine Biological Laboratory, Woods Hole, Mass. 



Laboratory Manuals 



A Laboratory Guide in Bacteriology 



By Paul G. Heinemann. 



S1.50, postage extra. 



Frosts' Culture Charts (modified) 



For use with Heinemann's Laboratory 

 Guide. 1 cent each, postage extra. 



The Embryology of the Chick and the 

 Pig 



By Frank R. Lillie. 



27 cents, postpaid. 



Methods in Plant Histology 



By Chakles J. Chamberlain. 



S2.25, postage extra. 



Nexu-ological Technique 



By Irving Haedestt. 



$1.75, postage extra. 



Animal Micrology 



By Michael F. Gtjter. 



S2.00, postage extra. 



The University of Chicago Press 



5811 Ellis Avenue 



Chicago, Illinois 



The American Academy 

 of Arts and Sciences 



28 Newbury Street, Boston, Mass. 



Just issoed. Proceedings, Vol. 52, Nos. 9, 10, 11. 



62. 11. Crozier. W.J. — Ou the Pigmentation of a Poly- 

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



62. 10. Thaster, Boland. — New Laboulbeniales, chiefly 

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

 »1.00. 



62. 9. Bridgman, P. W. — The Electrical Ecsistance ot 

 Metals under Pressure. Pp. 571-646. February, 1917. 90 cents. 



Other recest issues of the Proceedlnes 



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

 of Western North America. Pp. 455-569. January, 1917. $1.25. 



52. 7. Hitchcock, Frank Lauren. — A Classification of 

 Quadratic Vectors. Pp. 369-454. $1.25 



52. 6. Wilson, E. B., and Moore, C. L. E. — Diffeiential 

 Geometry of Two Dimensional Surfaces in Hyperspace. Pp. 

 267-368. November, 1916. $1.50. 



62. 5. Walton, A. C. — The 'Eefraotive Body' and the 

 • Mitochondria ' of AJscaris canis Werner. Pp. 253-266. 2 pis. 

 October, 1916. 40 cents. 



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

 the Radiation Characteristics of an Antenna. Pp. 189-252, 

 Octolier, 1916. $1.00. 



62. 8. Bridgman P. W.— Polymorphism at High Pres- 

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



52. 2. Bridgman, P. W. — The Velocity of Polymorphic 

 Changes between Solids. Pp. 55-88. July, 1916. 60 cents. 



62. 1. Thaxter, Belaud.— New or Critical Species ol 

 Chitonomyces and Eickia. Pp. 1-64. June, 1916; 70 cents. 



School of Hygiene and 

 Public Health 



OF THE 



Johns Hopkins University 



The establishment of a School of Hygiene and 

 Public Health is announced by the Johns 

 Hopkins University. Instruction will begin 

 with the opening of the academic session 

 October 1, 1918. Men and women students 

 will be admitted on the same terms, (bourses 

 have been arranged leading to the degrees of 

 Bachelor of Science in Hygiene, Doctor of 

 Science in Hygiene and Doctor of Public 

 Health. A circular describing these courses 

 and giving othef information will be sent on 

 appUcation to the Director of the School of 

 Hygiene and Public Health, care of the 

 Johns Hopkins Medical School, Washing- 

 ton eind Monument Streets, Baltimore, 

 Maryland. 



