DEPARTMENT OF EXPERIMENTAL EVOLUTION. 93 



STAFF. 



The staff remains as last year, except that Dr. A. F. Blakeslee, of Storrs 

 Agricultural College, has accepted an invitation to associate himself with the 

 Station for one year to carry on work in mutation and sex-control. Dr. 

 F. E. Chidester, of Rutgers College, worked upon the effects of feeding 

 extract of the ductless glands on the development of mammals. During 

 the summer Dr. Shull was faithfully and efficiently assisted by Mr. William 

 F. Friedman in making scientific records and in pollinating Indian corn. 



CONSTRUCTION AND EQUIPMENT. 



The animal house which was started last year was duly completed and 

 was occupied during the summer for breeding the small mammals required 

 for certain physiological and chemical studies. The chemical laboratory was 

 moved to the upper floor of this building, which has been fitted up for the 

 purpose. Attention is again called to the crowded condition of the present 

 building. At the suggestion of the Trustees plans have been prepared for 

 completing this building, which is to take care of all our small animals, in- 

 cluding the Whitman pigeons which are to come to us. Certain new di- 

 rections of work require the control of conditions which can not be furnished 

 in the present building. New needs arise with the development of our 

 science which require additional equipment. 



The other principal piece of construction of the year has been a new house 

 for young chicks, relieving the greenhouse, formerly so employed, for plant 

 work. This building, 80 by 20 feet, is built of concrete blocks covered with 

 stucco, and provides for 15 runways. The work of fencing the station farm, 

 using concrete posts, has been started. 



