OBSERVATIONS ON INSECTS AND VERMES. 415 
impulse, are leaving their homes, and, bent on emigration, swarm 
by myriads in the air, to the great emclument of the hirundines, 
which fare luxuriously. Those that escape the swallows return no 
more to their nests, but looking out for fresh settlements, lay a 
foundation for future colonies. All the females at this time are 
pregnant : the males that escape being eaten, wander away and 
die. 
October 2. Flying-ants, male and female, usually swarm and 
migrate on hot sunny days in August and September ; but this day 
a vast emigration took place in my garden, and myriads came 
forth, in appearance from the drain which goes under the fruit-wall, 
filling the air and the adjoining trees and shrubs with their numbers. 
The females were full of eggs. This late swarming is probably 
owing to the backward, wet season. “The day following, not one 
flying ant was to be seen. , 
Horse-ants travel home to their nests laden with flies, which they 
have caught, and the aureliz of smaller ants, which they seize by 
violence.— WHITE. 
In my “ Naturalist’s Calendar” for the year 1777, on September 
6th, I find the following note to the article Flying Ants : 
I saw a prodigious swarm of these ants flying about the top of 
some tall elm-trees (close by my house); some were continually 
dropping to the ground as if from the trees, and others rising up 
from the ground ; many of them were joined together in copulation ; 
and I imagine their life is but short, for as soon as produced from 
the egg by the heat of the sun, they propagate their species, and 
soon after perish. They were black, somewhat like the small black 
ant, and had four wings. I saw also, at another place, a large sort 
which were yellowish. On the eighth of September, 1785, I again 
observed the same circumstance of a vast number of these insects 
flying near the tops of the elms and dropping to the ground. 
On the 2nd of March, 1777, I saw great numbers of ants come out 
of the ground. —MARKWICK. 
GLOW-WORMS. 
By observing two glow-worms which were brought into the field 
to the bank in the garden, it appeared to us that these little 
