FIFTEENTH ANNUAL REPORT OF THE DIRECTOR. 19 
closely with the average for the 33 years covered by rec- 
ords, the daily mean being .4° F. below the average, for 
the entire year. The close seasonal comparability of the 
monthly means with the average is shown by the accom- 
-panying diagram, June, alone, of the open months having 
been sufficiently (5° F.) below the average to appreciably 
interfere with the customary luxuriant growth of bedding 
plants, and such aquatics as Victoria. 
DIAGRAM D. 
r100+F: 
Pe 
° ~-> eat 
L+-75—F- = aed 
- 
Zo- Tene 
-50—F: Pe atl PSs 
‘° me Seu, 
oor Noe | 
eo Pm 
is) 
2s Pe 
PS s > uu) > i rh S e 
4 q < & < Zz 3 5 -* Q 6 rd 
4 = < — => =< oO fe) i ° 
Lows l l l 
MEAN TEMPERATURES. 
The accompanying precipitation curve for the year, 
with average curve for the past 33 years, shows much 
greater deviation from the normal as represented by 
averages. The total precipitation for the year, as shown 
by the same records, is 3.39 in. lessthan the average. As 
the diagram shows, much of this deficiency in rainfall 
occurred in the spring and autumn months, so that it in- 
terfered materially with the successful transplantation of 
trees and shrubs at both seasons. It has proved possible, 
however, to maintain the decorative features of the Garden 
in amore than usually attractive manner through the entire 
open season. 
The distribution of labor through the several departments 
of the Garden is shown by the accompanying diagram, 
which clearly brings out the increased time devoted to plants 
