TWENTY-FOURTH ANNUAL REPORT 
OF THE DIRECTOR. 
SUBMITTED TO THE BOARD OF TRUSTEES OF THE 
MISSOURI BOTANICAL GARDEN, JANUARY 8, 1913. 
- Gentlemen: 
I have the honor to submit herewith the Twenty-fourth 
Annual Report of the Director, covering the eight months 
sir! May 1, 1912, the date of my appointment, to January 1, 
913. : 
THE GARDEN. 
IMPROVEMENTS AND CHANGES. 
1. Heating Plant. The most important improvement 
during the year has been the installation of a central heat- 
ing plant. Replacing fourteen separate fires, it not only 
saves much in labor and fuel, but likewise provides a con- . 
stant and sufficient temperature throughout the various 
greenhouses, a condition which it was impossible to main- 
.tain with the old system. It has been found necessary to 
replace practically all the heating pipes in the old houses, 
and the plants, particularly the tropical ones, are already 
showing the effect of the improved conditions. The office 
and laboratory building, the museum, as well as the resi- 
dence, are now all connected with the one heating system. 
2. New Range of Greenhouses. Ground was broken for 
the new greenhouses early in April, but owing to various 
delays the entire range is, as yet, far from complete. The 
north wing was sufficiently advanced to be used for the 
chrysanthemums during the month of November, and floral 
displays will be continued in this house throughout the 
winter and spring. 
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