THIRTEENTH ANNUAL REPORT OF THE DIRECTOR. 
SUBMITTED TO THE TRUSTEES JANUARY 8, 1902. 
. To the Board of Trustees of the Missouri Botanical Garden: 
The following report on the Missouri Botanical Garden 
and the Henry Shaw School of Botany, of Washington 
University, is respectfully submitted in compliance with 
the rules of the Board. 
THE BOTANICAL GARDEN. 
During the year just closed, the ornamental features of 
the Garden were of the same general character prevalent 
during recent years, lawns, attractive or instructive 
groups of trees, shrubbery and hardy herbaceous plants, 
and decorative bedding being the open-air features, while 
in the plant houses special collections were strengthened 
and the effectiveness of their display was increased by 
changes in disposition and by the removal of the central 
staging in places, notably in the house devoted to tropical 
plants. This year, for the first time, the bromeliads, num- 
bering something over 100 species, were brought together 
in a house exclusively devoted to plants of this group, and 
they now form a striking and interesting feature of the 
collection sheltered under glass. 
Gardening of every description was rendered unusually 
difficult and expensive by the extreme heat and prolonged 
drought which marked the season of 1901. In order that 
these may be understood, I have prepared a few tempera- 
ture and vrecipitation curves, which are incorporated in 
this report, since they present the climatic conditions to the 
eye in a graphic manner. 
On the diagram marked A, the maximum daily tempera- 
ture recorded at the Garden during the months of June, 
July and August, 1901, is represented by the full line, 1. 
(13) 
