EUCALYPTUS TREES. Dns. 
rica. A somewhat shrubby and trailing plant, de- 
serving even for the sake of its handsome flowers a 
place in any garden. It sustains its life in the most 
arid deserts. The frosts of our lowlands do not de- 
stroy this plant. The flower-buds and young berries 
preserved in vinegar, with some salt, form the capers 
of commerce. Samples of capers, prepared from plants 
of the Botanic Garden, are placed in our Industrial 
Museum, together with many other industrial prod- 
ucts emanating from the writer’s laboratory. A close- 
ly-allied and probably equally useful plant, Capparis 
nummularia, is indigenous to Northern Australia. 
The Caper-plant is propagated either from seeds or 
suckers ; it is well able to withstand either heat or 
drought. ‘The buds after their first immersion into 
slightly-salted vinegar are strained and afterward pre- 
served in bottles with fresh vinegar. Chemical prin- 
ciple: glycosid. 
Capsicum annuum, L.—Central America. An an- 
nual herb, which yields the Chillies and thus also the 
material for Cayenne Pepper. Chemical principle : 
capsicin, an acrid, soft, resinous substance. 
Capsicum baccatum, L.—The Cherry-Capsicum. A 
perennial plant. From Brazil brought to tropical Af- 
rica and Asia, where now other Pepper-Capsicums are 
likewise naturalized. 
Capsicum frutescens, L.—Tropical America. The 
- berries of this shrubby species are likewise converted 
into cayenne pepper. 
Capsicum longum, Candolle.—Some of the hottest 
partsof America. Anannual herb, also yielding cay- 
enne pepper. Our Summers admit of the successful 
growth of at least the annual species of Capsicum in 
all the lowlands. 
