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wise unharmed. Euphorbia splendens (the crown of thorns) had 
its leaves yellowed and shrivelled; it has since entirely recovered. 
Several species of candelabra “cactus” were - badly browned 
towards the tips, but not killed. Hoya carnosa (the wax plant), 
a native of tropical Asia, was apparently unaffected. Wandering 
Jew (Zebrina pendula), growing under the benches, was unin- 
jured, while several kinds of Boston fern (Nephrolepis) were 
badly yellowed. 
Not more than three or four species of plants were killed out- 
right, these being species of Opuntia and Cereus. It was interest- 
ing to notice the change in the coloring of the leaves of many 
plants; various species of Sedum, Bryophyllum (the sprouting 
leaf), Echeveria microcalyx and Othonna crassifolia being espe- 
cially noticeable. The leaves of these plants changed from the 
normal color to a beautiful reddish brown, making them very 
attractive. The leaves of practically all of the fig marigolds 
(Mesembryanthemum) were extremely limp on the mornings 
when low temperatures were recorded, causing the plants to ap- 
pear as if suffering from lack of water. They are all perfectly 
healthy now. 
Economic House-——Minimum winter temperature maintained 
under normal conditions, 60°. Lowest temperature recorded, 
The average lowest temperature from December 20 to 
February 20 was about 50°. 
- This house contains a collection of tropical economic plants, 
and was used in part to accommodate the plants from the houses 
it was decided to close. Temporary benches were erected in the 
walks to take care of Begonias and a small collection of orchids. 
The plants more likely to withstand rough treatment were placed 
on inverted flower pots amongst the economic plants, which are 
for the most part planted in solid beds. This house is a cur- 
vilinear structure with a lantern. The dimensions are 100’ long, 
so’ wide, and 36’ to the top of the lantern. 
e plants actually killed by the low temperatures were as 
follows: The chocolate tree (Theobroma Cacao), Para rubber 
(Hevea brasiliensis), Indian almond (Terminalia Catappa), and 
coconut (Cocos nucifera). The following plants were more or 
less injured: Allamanda Hendersoni, A. Williamsti, and A. 

