SUGGESTIONS TO TEACHERS. 463 



Mr. C. J. Maynard, 447 Crafts street, West Newton, Mass. 

 (Living material.) 



Mr. A. A. Sphung, North Judson, Indiana. Frogs, turtles, 

 clams, and cray-fish (living). 



Dr. F. D. Lambert, Tufts College, Mass. (South Harps- 

 well, Maine, from June 12 to September 15). (Preserved 

 marine material.) 



Mr. George K. Cherrie, Brooklyn Institute Museum, Brook- 

 lyn, N. Y. (Preserved material.) 



Aquarium Supply Co., Delair, N. J. (Living material.) 



Mr. W. H. Ficklin, Central High School, Kansas City, Mo. 

 (Preserved material.) 



Ward's Natural Science Establishment, Rochester, N. Y. 



Western Natural Science Establishment, Lawrence, Kansas. 

 (Preserved material.) 



Supply Department, Hopkins Seaside Laboratory, Stanford 

 University, California. (Marine material, preserved.) 



Most of these dealers issue price lists which may be had 

 on application. 



In addition to such materials as indicated above, unless the 

 instructor has the time and equipment to make satisfactory 

 permanent mounts of microscopic preparations, he should 

 secure a few, illustrative of cell structures, cell division, cleav- 

 age of ova; also sections of hydra, of the earthworm, and 

 preparations of some of the more important tissues of higher 

 animals, as bone, nerve cells and fibres, epithelial tissue, glandu- 

 lar tissue and the like. Some of these may be purchased of the 

 dealers in microscopical supplies. They may usually be secured 

 at reasonable rates by writing to the biological departments of 

 the large universities. There are usually advanced students in 

 these laboratories who are glad to make a few dollars in con- 

 nection with their work. Such preparations lend a great deal 

 of interest as demonstrations in connection with the laboratory 

 work. 



The writer's laboratory (Millikin University, Decatur, 111.) 



