LABORATORY WORK 341 



are given in the Bulletin of the U. S. National Museum, No. 39. 

 Parts A to M, 1891-1899 are already published. 



Material. - - The teacher should know before beginning the course 

 which of the types he can obtain alive in his locality, and where and 

 in what months they can most readily be found. He should know 

 these things not only about the ten types selected but also about 

 others, as certain types may prove to be unobtainable when wanted. 

 He must give due attention to the difficulty of procuring living 

 material during cold weather. Pupils should be encouraged, where 

 practicable, to aid in procuring material for class work ; the excur- 

 sions recommended may be utilized to some extent for this purpose. 



Correspondence from teachers who, as a result of their experiences 

 in using this outline, have any suggestions to offer which may be 

 incorporated in a future revision of it, is solicited. 



[Dealers in animals for class work. Mr. George K. Cherrie, 

 Brooklyn Institute Museum, Eastern Parkway and Washington 

 Avenue, Brooklyn, N. Y., will undertake, after September 1, 1900, to 

 supply schools with the animal material illustrative of most of the 

 families referred to in the text, and will supply schools and colleges 

 with preserved animals in quantity for class use. 



Dealers in live animals are : 



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



Mr. F. G. Hillman, New Bedford, Mass. 



Aquarium Supply Co., Delair, N. J. 



Messrs. C. E. Blake, 1486 E. 69th Street, Chicago, 111. (can furnish 

 some of the material alive). 



In addition to the foregoing, preserved material will be supplied by : 



The Marine Biological Laboratory, Woods Holl, Mass. 



Messrs. II. H. & C. S. Brimley, Raleigh, N. C. (also some living 

 material). 



Mr. F. W. Wamsley, Acad. Nat. Sci., Philadelphia. 



Most of these dealers will furnish catalogues of material on 

 application.] 



