j6 Report of the President 



collections, which now number about four hundred species of 

 excellently mounted material. Through his generosity in adding 

 to the collection, he is rapidly making it one of the most impor- 

 tant in the country. Mr. Myers has also presented to the 

 Department a complete Stephenson binocular microscope outfit, 

 especially adapted for this work, and a slide cabinet for 

 rotifers, of the most recent make. 



Mr. Arthur P. Jacot continued his work on the catalogue of 

 the mollusk collections until he left for China in August. Dur- 

 ing the two years that Mr. Jacot was with us, 



The Mollusk j^ catalogued more than 20,000 sets of shells, 

 Collections ° 



entailing the writing of 20,000 special catalogue 



cards, the examination and handling of the shells concerned, 

 and the rearrangement of the collection both in the exhibition 

 cases and in the study collection drawers. In addition to this 

 work, a separate record was made for each item in our refer- 

 ence catalogue, which indexes the entire series, and has in- 

 volved the writing of 8,000 cards over and above those in the 

 main series. 



As the result of his work we may now consider the Marine 

 Gastropod collection completely catalogued. This achievement 

 is especially noteworthy as the part known as the Steward 

 Collection, which has never before been exhibited, proved 

 much larger than was expected and took the greater part of 

 Mr. Jacot's time during the elapsed portion of the present year. 



The collection has been consulted by a number of scientists 

 during the past year, and our attention has been called repeat- 

 edly to the value of certain parts of our series. 



The Lamellibranchs and the Land Shells remain to be done, 

 and a revision of the synonymy on cross reference cards is 

 necessary. 



The study collection of insects has been greatly improved 

 during the past year by the completion of the task of assem- 

 bling the type specimens in special fire-proof and 

 i? s » ct .. pest-proof cases. The work of arranging the 



Collections £., ._ _ „ . . ° r - 



Identification Collection is progressing satisfac- 

 torily. The Identification Collection is limited to a few speci- 



