Summer Session, 



XLbc Biological Xaborator^ 



Of the Brooklyn Institute 

 of Arts and Sciences . . . 



COLD SPRING HARBOR, L. I. 



Situated on the sea, near lakes, streams and forests. 

 Field courses in Zoology and Botany. Sixteenth season 

 July 5 to August 5. For announcement address 



C. B. DAVENPORT, Director. 



FOR TEACHERS OF BOTANY AND NATURE-STUDY 



We now have ready two auxanometers (plant-growth recorders), Lloyd's model at 

 $2.00, and the HMSAC at $2.50 ; lattice- work plant presses at 35 to 60 cents ; trans- 

 parent specimen cases for life-histories, wood frame, separable, dust proof, no case is 

 better, 45 cents and up, many sizes. Other simple apparatus ready and in preparation. 



LOWEST FRJCES. SEND FOR CIRCULARS. 



"HOME-MADE" SCIENTIFIC APPARATUS CO., Mechanicsburg, 0. 



HELPS IN BOTANY 



The American Botanist is an illustrated monthly journal devoted to in- 

 teresting facts about plants. It prints no technical articles, but treats of such subjects 

 as color, fragrance, nectar, pollination, seed-dispersal, and the uses and habits of plants. 

 Worth many times its price to any teacher interested in Botany. Subscription $1.00 a 

 year ; sample for a two-cent stamp. Address, 



WILLARD N. CLUTE & CO., Binghamton, New York. 



MARINE BIOLOGICAL LABORATORY 



Supply Department,— !• Zoology — Preserved Material of all types of animals for 

 class work or for the museum. '4. Botany— Preserved Material of Algae, Fungi, Liverworts and 

 Mosses. For price lists and all information address GEO. M. GKA*, Curator, Woods 

 Holl, Mass. 



