44 
fala} 
eon 
C. philippinense has been utilised by the hybridists on several occasions. 
For example, C. X selligerum Rcup. F. was obtained from it and C. barbatum 
Linot.; C. X Vipani had C. nivewn Reus. ¥., for the other parent; C. Berenice 
Rotre was derived from C. philippinense and C. Lowi Linvv., while C. X Alfred 
N. E. Br., is descended from C. philippinense and C. venustum Watt. And there 
are two or three other interesting hybrids partly derived from the same species. 
R. A. ROLFE. 
(Continued from p. 42.) 
I think the ‘air in Belgium must be rich in nutritive matters which are 
good for vegetation, and perhaps for mankind. But what about the water? a 
plentiful supply of which is found to be a few feet from the surface, not hard, as’ 
ours often is, but quite as good and sometimes better for plants than rain-water. 
Nicotine, the poisonous property of tobacco, is generally acknowledged to 
be a useful agent in killing plant pests, and tobacco being cheap in Belgium, 
the leaves are strawn under the stages, and the fumes that arise from them 
effectually destroy thrips in a manner much more efficient than ours, which often 
ruins the plants of Odontoglossum Alexandrae. I have also the notion that the 
vapour from these leaves impart vigour to the plants... 
(BURBERRY, in The Gardeners’ Chronicle, January 13, 1894.) 
The matter referred-to in the preceding article is a very interesting one; 
we do not agree with several of Mr Burzerry’s statements, and propose to 
answer him in a next number. 
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