(162) 



now on the botanical staff of the Carnegie 

 Washington, was in residence at Cinchona engaged in 

 certain physiological investigations with special reference 

 to the growth of tropical forests. 



Arrangements have been made for Professor Duncan S. 

 Johnson of Johns Hopkins University, to visit Cinchona 

 next spring with several students, the party being especially 

 concerned with questions of morphology and physiology. 



Lectures and Demonstrations 



Spring and autumn courses of public lectures have been 

 delivered in the lecture hall of the museum building on 

 Saturday afternoons, as in previous years, mostly by mem- 

 bers of the staff. The spring course commenced April 24 

 and ended July 10; the autumn course commenced Octo- 

 ber 2 and ended November 13. It is proposed to conduct 

 a summer course this season, returning to a suggestion made 

 two years ago, but not carried out. 



Nature-study lectures and demonstrations to children 

 and teachers of the public schools of the Borough of the 

 Bronx were given in the spring and in the autumn, the total 

 attendance being over 17,000. 



Guides and Guide-Books 



Aids and assistants have been detailed for the purpose 

 of escorting visitors who applied for guidance through the 

 grounds and buildings, as in previous years, and this system 

 has been found very useful, in supplementing the installa- 

 tion and labeling of plants in the grounds and greenhouses 

 and of specimens in the musems. Aids have also given per- 

 sonal guidance and instruction to classes of school children 

 with good results. 



In cooperation with the Hudson-Fulton Celebration 

 Commission, a new descriptive guide to the grounds, 

 buildings and collections, supplemented by a descriptive 

 account of the native trees of the Hudson River valley, was 

 published in August as Bulletin No. 23, and reissued as a 



