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expensive. That is, however, not for private action ; but the 
use of the eucalyptus is for all who live on the plains out of 
town. 
This fear is greater now, and the ground less wholesome ; 
but of that and the inquiries of Dr. Balestra and others I 
hope to speak after some time. At present I shall content 
myself with a few recommendations. 
The conclusion to which I come is that enough is known 
to prove that great benefit may be expected from the 
cultivation of the eucatyptus globulus and perhaps more from 
other species. The best plan to begin would probably be 
by surrounding with trees any house to be inhabited in a dis- 
trict subject to malaria,. That the benefit seems to arise in 
the second year, as soon as the plants give out a great deal 
of odour. That the experiment near Rome is very small 
and somewhat mixed, but is nevertheless enough to give 
great hope to those who have an opportunity to try the 
same in the Campagna and elsewhere. That the experi- 
ments made in other countries seem to indicate a certainty 
of benefit. That, the value of wood being great near Rome, 
the eucalyptus promises a substance much wanted and there 
is therefore a double reason for growing it. That the 
growth is unusually rapid, so much so that even in five years 
the wood is much larger than that usually employed for 
burning in Rome. The expense of the crop is therefore 
small, and Rome is thus promised both a supply of health, 
of warmth, and of power by the outlay of little money and 
with little labour. Apparently Rome need never envy us 
our coals, for her coal thus got will last for ever. 
I have made no new discovery in relation to this subjects 
but have only put together a few of the more striking points. 
