ROSE LOUSE. 
329 
ginning of February they are generally found in 
abundance upon the tender buds of the rose, and if 
the weather prove mild they continue to enjoy their 
situation ; but if it should become very cold, most 
of them will be destroyed, and the plants in a great 
measure cleared of them. 
Although we have selected this species as the one 
most commonly known to the casual observer, yet 
there are several others of the same genus; but 
their habits and manners are so nearly allied that 
the same history will apply to them all. There 
is something so curious in the oeconomy of these 
creatures, that entomologists have thought it worth 
their while to pay particular attention to them, 
and among the rest the late Mr. Curtis has not 
been wanting in his endeavours to complete their 
history. The result of his labours are published 
in the sixth volume of the Transactions of the Lin- 
nean Society ; and as he has given by far the best 
account of these little insects, we shall avail ourselves 
of his information, taking the liberty, at the same 
time, to abridge what it would be superfluous for us 
to introduce. 
It appears from the observations of naturalists 
that these little creatures possess a very wonderful 
property, the females continuing to produce a great 
number of generations after being once impreg- 
nated. This is so singular a circumstance that 
nothing but repeated observation could satisfy many 
of the truth of it. However, the fact is now well 
established, and IVTr. Curtis (Quotes JVI. Bonnet in 
