(336) 
The collections of irises, peonies, roses, dahlias, etc., on 
the grounds also attracted large crowds of people. 
May 8,9. Exhibition of Flowers. 
June 12, 13. Exhibition of Roses, Peonies, and Irises. 
August 21, 22. Exhibition of Gladioli. 
September 25, 26. Exhibition of Dahlias. 
Personal Investigations 
A large share of the time I could spare from public in- 
struction has been devoted to work on Wycologia and two 
guide-books, one covering the buildings and grounds and 
the other the economic museum. 
A little mycological field-work was done during my vaca- 
tion in Virginia and the southern Catskills. ‘Two articles 
on resupinate polypores, containing descriptions of many 
new species, have been prepared and published during the 
year. 
Respectfully submitted, 
V. A. MURRILL, 
Supercisor of Public Instruction. 
REPORT OF THE SUPERVISOR OF GARDENING INSTRUCTION 
Dr. N. L. Brirron, DrrecTor-1n-CHIEF. 
Sir: I have the honor to submit the following report for 
the year 1920. 
With the return of the students from the Christmas 
vacation on January 5, the instruction in gardening was 
continued according to the revised curriculum. The 
practical work was continued at the conservatories and 
the propagating houses, by groups under the supervision 
of our instruction assistants, foreman gardeners, an 
myself, and by individual Hore with our gardeners in the 
various houses. 
After the general greenhouse practice of midwinter, 
such as potting, tubbing, cleaning, watering, and ventilat- 
ing, the chief exercises of propagation were carried out. 
Practice in seedage proceeded on a large scale with annual 
and perennial flowering plants for our borders and with 
