124 THE ORCHID REVIEW. [June, 1918 
Brassolelia Veitchii, and other good things, while out of bloom Mr, 
Armstrong pointed out plants of the fine varieties of C. Trianz known as 
The Baron and The Premier, also a good plant of C. Iris, this being an 
example of a cross between the long and the short-bulbed Cattleyas, a group 
less easily grown than those of the labiata group. 
Elsewhere we noted three good plants of Cattleya Skinneri alba in bloom, 
with the richly-coloured Temple's variety, examples of the fine Lalio- 
cattleya Macqueda and George Woodhams, with many other good things 
which must be passed over, as also the seedlings and smaller plants, all of 
them in thriving condition and promising a fine display ot bloom in the 
antumn. 
A word must be added about the houses at Pembury, which Mr. 
Armstrong took over after the sale of the late Mr. J. Gurney Fowler's 
collection. They were easily reached by means of Mr. Armstrong’s side-car. 
Here what may be called the stock plants are kept, and we found many 
interesting things in bloom, as might be expected from an establishment 
where some thirty thousand plants are grown. There were many Cattleyas 
both species and hybrids, some good Leliocattleyas, a few Dendrobiums, 
among which the orange-coloured D. chessingtonense was conspicuous, 
while among the Cymbidiums we noted the yellow C. Lowianum concolor. 
There were also some good Odontoglossums and Odontiodas, examples of 
O. Bradshawiz anda light-coloured form of O. Sunbeam being noted among 
the latter. We also saw a few Masdevallias. The houses were originally 
designed for a general collection of Orchids, each group being represented, 
and they are necessarily used in the same way at present, though with much 
difference in detail, and we missed the fine collection of Dendrobiums in the 
long corridor which formed such a feature at our last visit. They are now 
widely dispersed, 
oes 
PROBLEMS OF GENETICS AND EVOLUTION.—“ The problem as to the 
origin of racial differences is a problem of evolution ; the problem of the 
origin of individual differences is a problem of genetics.” Babcock and 
Clausen, Genetics in relation to A griculture, p. 2. And, we would add, the 
boundary line between them is the problem of the heredity of acquired 
characters, which awaits solution . 
; 
k 
F 
4 
: 
z 
gi 
