82 Report of the President 



of the department have amounted to the preparation of 104 

 skeletons, 581 skulls and 10 body skeletons. 



To the collection of limb bones and the series illustrating 

 the form and structure of the stomach, now on exhibition in 

 the Synoptic Hall, there has been added a series of corrosion 

 models of the kidney which were prepared by the late Dr. C. 

 W. F. Muenchehofe, and also a series of wax models of 

 chondro-cranii. 



PUBLIC HEALTH 

 DEPARTMENT OF PUBLIC HEALTH 



Charles-Edward Amory Winslow, Curator 



The section of the Hall of Public Health illustrating 



insect-borne diseases has been pushed rapidly toward comple- 



„ ..... tion during the year. 



Lxhibition rT ^ 1 ........ . . . , . , . 



ihe exhibits dealing with the fly and its relation 



to disease have been materially extended. The life history 

 and the favorite breeding places of the fly are shown and the 

 rate of multiplication of the offspring of a single pair during a 

 season is illustrated. A large habitat group shows a section 

 of a stable with its barnyard, a cornfield and orchard in the 

 distance, and in the foreground the principal natural enemies 

 of the fly, including the hen, the toad, swallows, a phebe, a 

 bat, wasps, spiders and centipedes. The relation of the fly 

 to the spread of typhoid fever and infant mortality is illus- 

 trated by models, as are practical methods of fly control, 

 including the care of manure and the trapping of larvae and 

 adult flies. 



Substantial progress has also been made in the section of 

 the exhibit devoted to the relation between mosquitoes and 

 disease. The condition of the hospitals at Panama during the 

 French regime is shown, in comparison with the modern hos- 

 pitals now in operation. Group models illustrate the control 

 of malarial mosquitoes on the Isthmus by ditching and oiling, 

 and the destruction of yellow fever mosquitoes by fumigation. 

 The life history of the malarial mosquito and the destruction 



