SCIENCE-ADVERTISEMENTS 



Marine Biological Laboratory 



Woods Hole, Mass. 



INVESTIGATION 



Entira Y«ar 



INSTRUCTION 



July 2 to Auffiut 12, 

 1919 



SUPPLY 

 DEPARTMENT 



OpCK the Entire Year 



Facilities for reseach in Zoology, 

 Embiyology, Physiology and Bot- 

 any. Seventy -six private 1 abora- 

 toriea, SlOO each for not over throe 

 months. Thirty tables are avail- 

 able for beginners! n research who 

 desire to work uiider the direction 

 of members of the staff. The fee 

 for such a table ia $50.00. 



Coursea of laboratory instruction 

 with lectures are offeredin Inverte- 

 brate Zoology, Protozoology, Em- 

 bryology. Physiology and Morph- 

 ology and Taxonomy of the Algae. 

 Each course requires the full time 

 of the student. Fee, $50. A lecture 

 course on the Philosophical Aspeots 

 of Biology and Allied Sciences is 

 also offered. 



Animalsand plants, preserved, liv- 

 i ng, andin embryonic stages. Pre- 

 served material of all types of 

 animals and of Algae, Fungi, Liver- 

 worts and Mosses furnished for 

 classwork, or for the museum. Liv- 

 ing material furnished in season as 

 ordered. I^Iicroscopic slidesinZool- 

 ogy. Botany, Histology, Bacteriol- 

 ogy. Price liats of Sioological and 

 Botanical material and Microscopic 

 Slides sent on aj^Ucation. State 

 which is deared. For price lists and 



GEO. M. GIIA.Y, Curator. Woods Hole, Mass. 

 Theannualannouncement will be sent on application to The 

 IHrector, Marine Biological Laboratory, Woods Hole, Maas. 



Memoirs of the Wistar Institute of Anatomy and 

 Biology. No. 6, 1915 



THE RAT 



Data and Referenc* Tables. 278 Pages. SS Tables. 



Bibliography. 

 Compiled and Edited by HENRY H. DONALDSON. 



Postpaid, $3.00. 



The Wistar Institute 



Philadelphia, Pa. 



OPTIC PROJECTION 



Principles, installation and use of the Mag'o Lantern, Opaque 

 Lantern. Projection Microscope and Moving Picture Machine; 

 700 pages, 400 figs. By SiuoN Eenbt Gaob, B.S., and 

 Hbkbt PaEU>a Gaoe, Ph.D. Postpaid, S3.00. 



THE COMSTOCK PUBLISHING CO., lthaca,N Y. 



The University Laboratory 

 Designers 



ALEXANDEK SMITH, 



President 

 W. li. ESTABKOOKE, 



Gen. Manager and Sec'y. 



THOMAS B. FBEAS, 



Chief Designer and Treas. 

 W. A. BOKING, 



Consulting Architect 



This firm is prepared to offer consultation, 

 advice, report and design on chemical lab- 

 oratories. Complete plans may be offered 

 or work may be done jointly with institu- 

 tional architect. Consultation with archi- 

 tects needing expert advice in laboratory 

 construction is solicited. Send for booklet. 



Office; 52 Vanderbilt Avenue, New York City 



Cooking Qass at the 

 Soutli Dakota State Collejge 



are using GAS made by 



The "Detroit" 



Combination Gas Machine 



for supplying gas in Departments of 



Domestic Science 

 Chemistry and Physics 



(Onr 30,000 in daily a») 

 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 & Lighting Co. 



612 Wight St. 



Detroit, Mich. 



Are You About To Buy 

 Chemical Apparatus? 



Drop us a line before you buy 

 and we'll try to show you 

 what you may gain from buy- 

 ing from us. 



SPECIALIZE IN 

 Graduated and Blown Glasswaie 

 ThermometerB, Hydrometers 

 Coors and Guernsey Porcelain 

 Pyrex Glassware 

 All kinds Filter Paper, Hardware 

 Heavy Separatory Funnels and E^pps 

 Generators and Stains 



Out 500-page catalogue sent upon request 



LENZ APPARATUS CO. 



IManufticturers — Dealers — Importers 



18 East Sixteenth Street 



New York City, U. S. A. 



