52 
o.22. 
[a Vaw ) 
It is somewhat remarkable how small a number of hybrids have hitherto 
been procured from C. callosum. Certain species, such as C. Spicerianum, 
C. villosum and C. insigne, not to speak of the Selenipediums, have yielded a 
very numerous progeny, put C. callosum has only hitherto figured in three or 
four crosses at the most. We think, however, that in the future it will play 
an important part in the work of hybridisation. It is one of the most robust 
and rapidly growing species, and therefore 
that C. X Leonae also possesses the same character to an eminent degree ; 
otherwise it would singularly disgrace its origin. 
we are not at all surprised to find 
eles 
ORCHIDS AND MANURE 
The recent issues of the Fournal des Orchidées contain a series of interesting 
articles concerning that cultural point of great importance, whether certain 
special manures are beneficial to Orchids. MM. Count pe Moran and Lucien 
Linven, editor, pronounce themselves most decidedly against manuring, on 
the ground that whenever this treatment causes no injury to the plants (and the 
reverse is most frequently the case, because the active growth caused during 
the first two or three years by the stimulating food is followed by an excessive 
weakness, and by a rapid and inevitable death), the manure is yet unnecessary, 
as Orchids, in our gardens, prove as vigorous and healthy as we may expect 
to find them in a natural state. 
The conclusion which the above-named writers arrive at is therefore the 
following : — that manures, of whatever kind, must be, either dangerous, or 
at least useless; and therefore in both cases undesirable. 
M. Lucien Linven also states that no manure has ever been used in the 
treatment of Orchids at the establishment of L’HorticuLTURE INTERNATIONALE, 
and he requests all amateurs who may visit that famous nursery to take some 
pieces of the compost in the houses, as specimens which they can place under 
analysis, in order to ascertain that the compost used for Orchids cultivated at 
the establishment contains no trace of manure. 
M. G. 
rise 
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