Columbia University 



SUMMER SESSION JULY 7 to AUG. 18, 1909 



One hundred and sixty-five courses will be offered. There will be many courses in 

 the sciences. The following are of special interest to students of nature study: Botany i — 

 Nature and Development of Plants, 2 — Plant Physiology. Zoology — Elementary Biology 

 and Zoology. 



Tuition fee $30.00. Reduced railroad rates. 



For the Announcement of the Summer Session, address 



Secretary of Columbia University, New York City 



The Biological Laboratory 



of the Brooklyn Institute of Arts and Sciences, located at Cold Spring Harbor, Long 

 Island, N. Y., offers courses in Field Zoology, Bird Study, Comparative Anatomy and 

 Embryology of Animals, Plant Ecology and Cryptogamic Botany during six weeks be- 

 ginning July 7. Work done here accepted towards a degree in colleges. 



Well equipped laboratory, but much of the work is done out-of-doors where observa- 

 tions can be carried on throughout the day. Varied environments : sea, brooks, lakes 

 and land. Fireproof dormitory for women with hot and cold water and sewerage system. 

 Two dormitories for men. Fine sea bathing. Boarding arrangements on a co-operative 

 basis. For further information and announcement, address 



C. B. Davenport, Cold Spring Harbor, Long Island, N. Y. 



The Nature-Study Review 



PRICES OF BACK NUMBERS 



Volume I, 1905 - $1.00. 



Volume II, 1906 - 2.35.* 



Volume III, 1907 - .60. 



Volume IV, 1908 - .60. 



Volumes I, III, and IV - - - 1.65. 



Volumes III, IV, and V, (1909) - - 1.50. 



*Vol. II is out of print, but second-hand sets are occasionally repurchased and 

 sold at cost. 



All prices are for unbound copies. Hereafter binding will cost 70 

 cents per volume extra. 



A set containing 26 of the 36 numbers published will be mailed for 

 $1.00. The best articles are in these 26, but broken sets are not wanted 

 by libraries and hence this low price, designed to get the copies into use 

 at once. 



Address orders direct to 



Secretary of the A. N.-S. S., 



525 W. 1 20th St. New York City. 



