

16 
Cathartica. Their leaves were badly yellowed and some fell off. 
On July 30 these plants were in good condition and blooming 
profusely. Fittonia argyroneura was the first plant to show signs 
of distress, the whole of its leaves being killed; it looks none the 
worse for the ordeal at present. Fittonia Ver schaffeltii, strangely 
enough, was uninjured. Piper ornatwm, growth arrested; Nor- 
antea guineensis, old leaves reddened, young leaves killed; Strobi- 
lanthes Dyerianus, growth stunted; Papaw (Carica Papaya), old 
leaves partly withered; Malanga (Xanthosoma sagittifolia), 
growth arrested, leaves sickly looking; Carissa grandiflora, leaves 
reddened; oil palm (Elaeis guineensis), leaves slightly yellowed; 
Gynura aurantiaca, old leaves browned at edges, ultimately falling 
off; African violet (Saintpaulia wonantha), edges of leaves 
rieried: sickly yellow; banana (Musa sapientum), growth com- 
pletely arrested. 
The remainder of the plants showed no ill effects. Amongst 
them may be noted the following: Kentia Belmoreana, Pandanus 
utilis, Cocothrinax crinita, Sansevieria guineensis, Vanilla plant- 
folia, begonias (various species), Areca lutescens and Monstera 
deliciosa. 
Subtropical Economic House—Minimum winter temperature 
maintained under normal conditions, 45°. Lowest temperature 
recorded, 28°. On several occasions temperatures of 32° were 
recorded, and on one moring ice one half inch thick was formed 
on a jar of water standing on a side bench. All the plants likely 
to suffer from low temperatures had been removed from this 
house, and only enough heat was supplied to keep pipes from 
freezing. Among the plants left in the house were the date 
palm (Phoenix dactylifera), Camellia japonica, various kinds of 
Citrus, such as orange, grapefruit, citron, kumquat, lemon; and 
loquat (Eriobotrya japonica). These were uninjured. . 
Fern House—Minimum winter temperatures maintained under 
normal conditions, 63°. Lowest temperature recorded, 44°. The 
temperature fell to 50° on many occasions. The worst sufferers 
in this house were the stag-horn ferns (Platycerium), of which 
we have a good collection. These had just started to make their 
new fronds, and the result was that growth was completely 
arrested, and the plants have not yet fully recovered. Some o 


