90 
imposes an eneiees burden on our already overcrowded 
propagating hou 
n connection with the Beardless Iris Project, being carried 
out in cooperation with the American Iris Society, beds were 
prepared in the Experimental Enclosure and planted with 
Japanese and other irises. Also eight plots, each 10 x 12 feet, 
were prepared and planted with Japanese irises and experiments 
started with a view to learning more of the cultural requirements 
of this group. With the help of the laboring force, four new 
beds were added to those already along the brook, and planted 
with Japanese and bearded irises. 
Other new planting included a bed for lily-of-the-valley near 
the border mound northwest of the esplanade, in which 3,000 
“‘pips”’ were used. 
Conservatories 
The most important piece of work carried out in the conserva- 
tories was the thorough overhauling of the Economic House, for 
the purpose of providing room for the more important and 
interesting economic plants, and of making it more attractive to 
visitors. With this end in view many plants of lesser importance 
were discarded and new plants added, such as the chocolate tree, 
guttapercha, maté, the date palm, various citrus fruits, etc. 
So far as possible, flower pots were eliminated and the plants set 
directly in the beds. Surplus ornamental plants from the other 
greenhouses were planted as undergrowth and the walks defined 
with holly fern. 
International Seed Exchange 
The 1925 Exchange Seed List was restricted to woody plants 
and seeds of 282 species available for exchange were collected in 
the Garden and elsewhere. The distribution of seeds in 1925 to 
various countries is shown below: 
