1 



V 



36 



arrangement, noted on page 29, and in ni}- last annual report, be- 

 tween the Bureau of Markets, U. S. Department of Agriculture, 

 and the Garden has continued, as previously, under the imme- 

 diate supervision of Mr. F. C. Meier. The problem is the study 



r 



of transit and storage diseases of fruits and vegetables. It is 



F 



eminently fitting that the Garden should cooperate in this work, 

 for the losses due to these diseases contribute directly and in 

 large measure to the high cost of food in our city markets. 



Herbarium 



The curator of plants notes the accjuisition of the collection of 

 the Rev. L. H. Lighthipe of about 7,000 specimens, mostly 

 mounted. The mounting of other unmounted specimens has 

 been restricted to about 2,800 on account of the fact that the her- 

 barium cases are now fuh to capacity. Public use of the her- 

 ■ barium increases each year, and additional cases must soon be 

 provided if the specimens are to be properly protected and made 



accessible. 



Conservatories 



L 

 J 



The necessity of keeping the conservatories closed during 

 1918 has greatly affected the attendance since then, but the loss is 

 gradually being recovered as is shown by the recorded attend- 

 ance of 13,588 as against only 7,688 in 1919. 



Our collections have quite outgrown our accommodations and 

 further increase or enrichment will not be possible until the new 

 range, for which a site is reserved on the adopted plan of the 

 Garden, can be constructed. 



Library 



During the year the library has been enriched by the addition 

 of complete files of important journals hitherto lacking, and espe- 

 cially by the accjuisition of a number of rare pre-Linnaean classics, 



including one of the botanical incunabula. The accessions total 



460 books and 537 pamphlets. The total number of volumes is 

 6,500, and of pamphlets 4,v78- Over 450 serial periodicals are 

 currently received. 





