PKOPOLia. 
77 
second, by which it is lodged in the hollow of the third.” 
I have seen them thus remove the warm propolis from 
old bottom-boards standing in the sun. 
Propolis is frequently gathered from the alder, horse- 
chestnut, birch, and willow; and as some think, from 
pines and other trees of the fir kind. Bees will often 
enter varnishing shops, attracted evidently by their smell; 
and in the vicinity of Matamoras, Mexico, where propolis 
seems to be scarce, I saw them using green paint from win¬ 
dow-blinds, and pitch from the rigging of a vessel. Bevan 
mentions the fact of their carrying off a composition of 
wax and turpentine from trees to which it had been applied. 
Dr. Evans says he has seen them collect the balsamic 
varnish which coats the young blossom-buds of the holly¬ 
hock, and has known them rest at least ten minutes on 
the same bud, moulding the balsam with their fore feet, 
and transferring it to the hinder legs, a? described by 
Huber. 
11 With merry hum the Willow’s copse they scale, 
The Fir’s dark pyramid, or Poplar pale; 
Scoop from the Alder’s leaf its oozy flood, 
Or strip the Chestnut’s resin-coated bud; 
Skim the light tear that tips Narcissus’ ray, 
Or round the Hollyhock’s hoar fragrance play ; 
Then waft their nut-brown loads exulting home, 
That form a fret-work for the future comb; 
Caulk every chink where rushing winds may roar, 
And seal their circling ramparts to the floor.” 
Evans. 
A mixture of wax and propolis being much more 
adhesive than wax alone, serves admirably to strengthen 
the attachments of the combs to the top and sides of the 
hive. If the combs are not filled with honey or brood 
soon after they are built, they are varnished with a delicate 
coating of propolis, which adds greatly to their strength; 
