lll 
possessing wind-breaks should all possess spraying machines, 
which are discussed in another place. 
The box-elder bugs have one peculiar habit that we can 
utilize to keep them from becoming too numerous. They 
crowd together during the autumn, and are very slow and 
apparently stupid during the colder parts of the day. As 
they gather together in large numbers, such meetings could 
be enlivened by the owners of the trees injured by these 
insects, by pouring some boiling hot water over their enemies. 
This would dispose of many. Other meetings could be broken 
up by sweeping the bugs into tin pans or directly into a fire. 
The free use of kerosene oil upon the bugs upon side-walks 
or other places is also a good way of reducing their numbers; 
of course the oil should in no case be thrown upon the trunks 
of trees for that would be apt to killthem. In fact the bugs 
should be killed whenever and wherever seen, since other- 
wise they will increase still more, and to the great injury 
to the box-elder. 
The illustration (Fig. 57, Plate 13,) shows this insect in 
its different stages; the adult, shown both enlarged and in 
natural size, is a bright-colored insect. All the parts shown 
black in the illustration are of that color in the insect, while 
the light-colored parts are a bright red. In other words this 
bright color forms three broad lines over the black thorax, 
whence the latin name trivittatus or three-banded. The harder 
parts of the wings are edged with red, and all the veins are 
of the same, but more dingy color. The earlier stages of 
this insect are distinguished by the same color, which, being 
even brighter red than in the adult insect, enables us to readily 
detect them. 
THE BEAN-FLY. 
(Anthomyia spec. ) 
During June many letters were received from various parts 
of the state complaining about injuries to beans. The follow- 
ing letters may serve as examples: 
Pror. O. LUGGER, St. Anthony Park, Minn. Dear Sir:—I send you by 
to-day’s mail a package containing a baking powder can, in which you 
will find some young bean stalks. If you will examine these stalks you 
will find them tunnelled by a small worm or grub, which attacks the 
sprout before it comes up. Some of the sprouts inclosed were not yet 
