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so — the cultivation of the eucalypti, I would arrange the 
plants in thick plantations, mixed with pines or nondeciduous 
trees, in order that the latter might afford protection to the 
young plants during their earlier growths. I find that the 
stokea, an Australian genus, grows perfectly well and is 
wholly unaffected by the winter climate of England: it 
would prove a good associate with the gum tree. 
“Some twenty years since, on landing at Naples, and 
seeing so many plants of the Australian flora flourishing 
there, it occurred to me that the cultivation of the gum trees 
might be most advantageously followed throughout the 
whole of the Campagna. I tried to impress some of the 
official people in Rome whom I met with the idea, amongst 
others, Monsignor Talbot, whom I knew, and he engaged, 
if provided with the necessary supply of seed, that the 
experiment should be tried. At the cost of some trouble 
and expense, I procured a quantity of seed, sufficient by 
this time to have covered the whole Maremma and Pontine 
marshes with a forest of gum trees. But I believe the 
attempt in those good old days of Papal supineness was 
never made to initiate an experiment which, if successful, 
would transform the climate of Italy, and be of value in a 
thousand different ways. 
“ The coincidence of the presence of the eucalyptus and 
the infrequency of malaria is a most curious one. The 
investigation of the cause is one well worthy of pursuit.” 
In a second letter Sir Charles gives an account of the 
eucalyptus in India and New Zealand : 
“In 1861 I went through India, and on visiting the Nil- 
glierry hills was delighted to see the accacias, eucalypti and 
