89 
tween the grounds of the Garden and the northern end of the 
Zoological Park, and extending as it does through the woods for 
almost its whole length, adds a very attractive feature to the 
road system of the Garden. The total length within the Garden 
grounds is about eighteen hundred feet; the length within the 
portion of Bronx Park south of the Garden reservation is some- 
what greater. Special care has been taken to disturb the under- 
growth of the woods as little as possible. The southern end of 
the Hemlock Forest is in view from this driveway. 
Professor F.5. Earle, assistant curator, has been granted leave 
of absence to carry out some investigations for the Bureau of 
Plant Industry, U. S. Department of Agriculture in Porto Rico. 
He sailed on May 9g, and will make a general examination of 
the island for the purpose of determining the principal diseases 
affecting the agricultural and horticultural products. Professor 
Earle is expected to resume his duties in the Garden in June. 
Mr. S. H. Burnham, museum aid, was tendered the position 
as botanist to an expedition sent by the California Academy of 
Sciences to the islands near California in April, but was unable 
to accept the offer because of the press of work involved in the 
rearrangement of the collections in the museums. 
The following lectures of the spring course are still to be given : 
Flora,” by Dr. N. L. Britton; May 16, ‘‘The Food Supply of 
Young Plants,” by Prof. F. E. Lloyd; May 30, ‘The Color 
Variations of Flowers,” by Dr. C. C. Curtis; June 6, “ The 
Streams, Lakes and Flowers of the Upper Delaware, and the 
Story of the Sundew,”’ by Mr. Cornelius Van Brunt; June 13, 
“Vegetable Foods,” by Dr. H. H. Rusby. 
Dr. Theodore Holm, of Washington, D. C., is in residence at 
the Garden during April and May for the purpose of consulting 
the herbarium and library. 
Dr, J. N. Rose, assistant curator of the herbarium, U. S. 
National Museum, Washington, D. C., made a brief visit to the 
Garden during the first week in May for the purpose of complet- 
ing some work in which he is engaged with Dr. Britton, on the 
North American Flora, to be published by the Garden. 
