72 Report of the President 



cleaning, numbering and arranging the osteological material 

 received from the different sources has been varied by no 

 unusual circumstance. Much of the material prepared has 

 been specimens of large types, including one each of a Killer 

 Whale and Gray Whale. The total preparation has been 120 

 skeletons and 491 skulls. Much time has been given to assist- 

 ing the Department of Mammalogy, and Mr. Elwyn has mounted 

 8 skeletons and 9 skulls for the Department of Herpetology. 



It is with much satisfaction that we can report a complete 

 renovation of the macerating room. A window has been cut 

 through the east wall, an electric ventilator has been placed 

 in the ceiling, a new lighting system has been installed and 

 the old wooden floor has been replaced by one of cement; the 

 equipment is now all that could be desired, with the possible 

 exception of the degreasing apparatus. 



PUBLIC HEALTH 



DEPARTMENT OF PUBLIC HEALTH 



Charles-Edward Amory Winslow, Curator 



The most notable exhibit installed in the Hall of Public 



Health during the year is a model of the House-fly, with its 



egg, larva and pupa, prepared by Ignaz Ma- 



„ tausch, in the Department of Preparation. The 



Exhibitions • ' , . , . , c \ ' 



models, which are enlarged forty diameters, 



took nearly a year to prepare, and are remarkably accurate 

 and beautiful. The completion of this work was made possi- 

 ble by special gifts from Walter B. James. There has also 

 been prepared for the hall an original drawing of the Stable- 

 fly, Stomoxys calcitrans, the carrier of infant paralysis, and a 

 diagram illustrating the relative size of the typhoid bacillus 

 and the fly's foot. 



A model of a corner of a rat-infested house in California, 

 and a series of models illustrating various conditions which 

 favor the spread of insect-borne disease, were also completed 

 during the year. The latter include an ill-kept farm, with 

 undrained marshland and filth breeding insects, and the same 



