REPORT OF NATIONAL MUSEUM, 1921. 113 



A set of twelve 8 by 10 inch photographs of exhibits in the division 

 of medicine were furnished to Mr. Charles G. Merrell, Cincinnati, 

 Ohio, and were by him framed and hung in the Lloyd Library of 

 Cincinnati, in order to bring the work of the division to the atten- 

 tion of the many professional workers in botany, medicine, and 

 pharmacy who frequent that library. 



Mr. Merrell was also furnished a photograph of the model of the- 

 Birch oil still constructed by the Museum, from which he prepared 

 14 lantern slides and presented them to colleges throughout the 

 United States for use in lectures in the manufacture of essential 

 oils. 



Armour & Company, Chicago, 111., was furnished with a photo- 

 graph of the Museum's exhibit of animal drugs, part of the material 

 for wliich was furnished by that company. The photograph was 

 reproduced in the Armour Magazine for the information of its 

 employees. 



Several requests were made during the year by visitors and 

 correspondents for copies of two labels, one accompanying the series 

 illustrating the composition of the human body, and the other classi- 

 fying the specimens arranged to show the development of the heal- 

 ing arts. All of the requests were granted. 



