RED-CLOVER SEED PRODUCTION. Da 
cent. This small yield of seed may be accounted for by the occa- 
sional access of bees to these heads for a very short time, on account 
of rains or grasshoppers mutilating the tarlatan which was used to 
cover the heads. 
The bumblebee is an efficient cross-pollinator of red clover. 
Bumblebees are able to pollinate from 30 to 35 flowers a minute. 
The honeybee proved to be as efficient a cross-pollinator of red 
clover as the bumblebee in 1911. When the precipitation was con- 
siderably below normal in June, July, and August, 1911, and but 
few nectar-producing plants were to be found, honeybees collected 
large quantities of pollen from red clover. In order to collect pollen 
they must spring the keels of the flowers. In doing this they cross- 
pollinate the flowers. 
A clover cross-pollinizng machine which was offered for sale on 
the market did not prove to be an efficient cross-pollinator of red 
clover. 
The various types of hand-operated brushes which were used did 
not prove efficient as cross-pollinators of red clover. In nearly all 
cases where these brushes were used the seed yield was decreased 
instead of increased. This was undoubtedly due to the bristles of 
the brushes injuring the flowers, since the average seed yield of the 
plats which received three treatments with the brushes was lower 
than that of the plats which received but one treatment. 
