8 THE ORCHID REVIEW. 
head are Paphiopedium niveum, P. Godefroye, P. x vexillarium superbum, 
and numerous young hybrids, probably too young to do duty of this nature. 
I do not mean that I have had no success with the above, for I have 
seedlings coming on in which all three of them have taken part respectively. 
As these statistics cover a period of six years, and every instance of 
seedlings resulting is therein recorded, they may be worthy of attention. 
A glance at the table goes to show that the winter months are absolutely 
the best and the summer months the worst in which to sow Paphiopedium 
seed. Granted that more pods ripen during the winter than in summer, and 
hence more seed is sown, I think it will be conceded that no good object is 
_ likely to be gained in postponing the sowing of the seed to brighter weather. 
It should be distinctly understood that these remarks apply to 
Paphiopedium seed only, and not to Dendrobium, Cattleya, or Leelia seed, 
which may possibly benefit by more sunlight. On these I do not venture 
an opinion, as I have had little or no experience. 
Sefton Park, REGINALD YOUNG. 
Liverpool. 
DESTRUCTION OF COCKROACHES. 
A CORRESPONDENT has sent us specimens of a large brown cockroach 
which has proved very destructive to Orchids, with request for information 
as to the best means of exterminating them. A certain method of 
capturing them is to get some smooth jars, and put a little strong- 
smelling brown treacle at the bottom, standing the same close to the 
wall or other object behind which they hide in the daytime. The treacle 
acts as a powerful attraction to the insects, which being unable to retain 
their foothold on the smooth sides, fall in and are drowned. It is a most 
effective trap, and if persevered in long enough, should suffice to exterminate 
them, except in places where a fresh supply is kept up from an outside 
source, and even in the latter case it keeps their numbers down very effectually. 
They are easily caught before reaching the mature stage, and in this 
lies the hope of effecting something like a permanent cure. One, however, 
must be constantly on the alert, as they are so frequently re-introduced 
in the packing materials, and may do much damage before they are 
discovered. The treacle may be thinned with a little water, and the insects 
captured should be removed every morning. Our correspondent, to whom 
the above information was sent, replies that he has already captured a 
number of the pests, which are most troublesome in the warmer houses. 
Beetle poison may also be used, but can hardly be more effective. We 
shall be glad to hear of the experiences of others who may have been 
troubled with these voracious pests. 
