30 Report of the President. 



i. Models have been made of microscopic forms, espe- 

 cially the Protozoa, many of them enlarged 500-800 diameters, 

 of minute Hydroids, of Planarians, and Polyzoa. 



2. Series of models showing consecutive stages in the 

 development of different forms, as the development of a coral 

 polyp. These series in each case embody the results of the 

 researches of investigators of the particular subject with 

 which they deal, and are prepared under their supervision. 

 In exchange for duplicates, material has thus been obtained 

 from Prof. J. S. Kingsley, Prof. C. Judson Herrick, Prof. 

 Charles A. Bardeen, and their cooperation secured. 



3. Models have been prepared, showing the structure or 

 anatomy of some of the more complicated invertebrates, such 

 as the clam and oyster. 



4. Models have also been made of a number of inverte- 

 brate forms which, because of their perishable nature, are 

 impossible of satisfactory preservation. The sea anemones 

 and holothurians are good examples. 



The specimens of birds and mammals received by the 

 Museum during the year have been cared for, and from this 

 material skins and skeletons prepared for the study collec- 

 tions. Some thirty mammals and over one hundred and 

 seventy-five birds have been mounted. 



A group of Alaska Brown Bears, a group of Peccaries and 

 a group of Roosevelt Elk are under way. The material for 

 the Elk group has been collected during the year; also, among 

 other things, skins and accessories for a group of Beavers. 

 Several Reptile groups are under way, and a group of Land 

 Crabs from the Bahamas has been collected and prepared. 



A number of small bird groups have been constructed 

 from material collected by Mr. Chapman. Also two large 

 groups of birds — one representing the bird-life of an irri- 

 gated area of the San Joaquin Valley, the other a Flamingo 

 colony. 



Experiments toward the establishment of satisfactory meth- 

 ods of procedure in the mounting of mammals, reptiles, etc., 



