﻿EIGHTEENTH ANNUAL REPORT OF THE DIRECTOR. 17 



years 1902* and 1904,t the very unusual number of No- 

 vember visitors last yearj being also omitted from the aver- 



DIAGRAM B. 



t-5-INt- 



PRECIPITATION. 



age curve). The deterrent effect of the cold and stormy 

 weather of March and of the rainfall of September have 



DIAGRAM C. 



1-25000- 



JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEPT. OCT. _JvlOy^__DEC, 



VISITORS ON WEEK-DAYS. 



as evidently modified this diagram as have the favoring 

 weather conditions during most of the spring and summer, — 



* Rept. Mo. Bot. Gard. 14 : 17. t Rept. Mo. Bot. Gard. 16 : 17. 



t Rept. Mo. Bot. Gard. 17 ; 32. 



