aA a 
149 
New York Botanical Garden for each week were as follows: 
92° on the 5th, 81° on the 14th, 76° on the 25th, and 94° on the 
29th. The minimum temperatures were 41° on the roth and 
16th, 46° on the 21st, and 54° on the 28th. 
The collection of dahlias, which attracted so much favorable 
comment last year, has again been planted near the New York 
Central station, and includes 379 named varieties. Near them 
1,200 plants of hardy chrysanthemums have been set out, and 
in the Horticultural Grounds 20,000 corms of gladiolus have 
been planted, illustrating about 250 named varieties. 
The Rose Garden reached its period of maximum spring flower- 
ing in the middle of June, when a great majority of the 450 kinds 
represented were in bloom at once. Some of the varieties suf- 
fered a little from the effects of unseasonably cold weather laze 
in April, but the total amount of bloom was nevertheless fully as 
great as in 1918, although the flowering period was about a 
week later. 
Professor Louis Blaringhem, distinguished botanist and 
geneticist of the University of Paris, spent a few days at the 
Garden recently. During the half-year just closed, Professor 
Blaringhem has been exchange professor from the Sorbonne to 
Harvard University, where he has delivered lectures on agricul- 
ture and heredity. While at the Garden Professor Blaringhem 
made a special study of herbarium material and living plants of 
the American oaks. 
The display of Iris was at its height about Decoration Day, 
although some species had at that time already ceased to bloom 
and other late varieties had not yet begun. Of the latter, one 
of the most interesting is the red-brown flag, Iris fulva, whose 
deeply colored flowers were at their prime about June 15. This 
species is a native of the southern United States, extending as 
far north as southern Illinois; it is perfectly hardy in New York 
and is well worth a place in any Iris garden. 
