586 PROCEEDINGS OF THE ACADEMY OF [1859. 



upon Animal Life" will be delivered in January and February, 1896, 

 and during the spring two lectures in addition will be given upon 

 the results of the Alaskan and Siberian expedition. 



Respecfully submitted, 



Benj. Sharp, 

 Prof, of Invert. Zoology. 



REPORT OF THE PROFESSOR OF HISTOLOGY AND 

 MICROSCOPIC TECHNOLOGY. 



The Professor of Histology and Microscopic Technology respect- 

 fully reports that he has given laboratory instruction in microscopic 

 technic and carried on, as heretofore, original research in bacteri- 

 ology. 



The gifts of instruments and slides will be reported by the 



Biological Section. 



Samuel G. Dixon, 



Prof, of Histology and Microscopic Technology. 



REPORT OF THE PROFESSOR OF MALACOLOGY. 



The Professor of Malacology reports that there have been added 

 to the museum several thousand species of mollusks ; among others, 

 the types of many new forms of Polyplacophora and Achatinellidse, 

 and an alcoholic specimen of Nautilus pompilius may be mentioned. 

 The Tectibranchiata have been studied and identified, and an illus- 

 trated monograph of the group has been published. Other museum 

 work has been begun on the identification and classification of the 

 South American Bulimi. 



One lecture upon the "Protective Devices of Mollusks" has been 

 delivered. A course of five lectures upon the structure and classi- 

 fication of mollusks, and two lectures upon ' ' Economic Uses of 

 Mollusca" and " Mollusks of the Atlantic Coast" will be delivered 

 during February, March and April of the coming year. 



Respectfully submitted, 



H. A. PlLSBRY, 



Prof, of Malacology. 



