go JOURNAL AND PROCEEDINGS. 
advocates the spraying method as most effective, while Professor 
Beal, of the Michigan Station, favors jarring. 
The Curculionidz is a numerous family and nearly all are 
harmful. Mr. Billups, who read a paper at one of our meetings 
at Niagara, stated that the members of this family number 
nearly ten thousand species, many of which are injurious to our 
fruits. 
The Oyster-Shell Bark Louse is one of the worst pests of our 
Canadian apple orchards because it works almost entirely unseen by 
ordinary observers on account of its small size. Some of our worst 
foes are so minute that their presence can only be discerned by the 
use of a microscope. In its first stages this louse is almost micro- 
scopic. ‘The eggs, which lie all. winter concealed under the dead 
body of the parent louse, hatch out into tiny lice which emerge from 
their covering during the warm days of the early part of June, and 
in about a week they settle down upon some smooth place on the 
limbs, often concealed from view by patches of old bark. There 
they spend the summer sucking the juices of the tree, weakening its 
vigor, until full grown, when each becomes a ‘scale, covering in its 
turn three or four score of eggs. When I first discovered it, I found 
many trees almost dead through its effects. The bark was rough, 
but I had not previously suspected that these rough places were 
scales concealing young lice. Lousy trees! Whata disgrace! I 
soon set to work with alkaline solution, such as washing soda and 
potash, and also with kerosene emulsion, and by their use have 
succeeded pretty wellin destroying them. If neglected, these insects 
will in time completely cover a tree, even to the outer branches, and 
it is difficult then to reach them with broom or scrubbing brush. 
The only plan left is to spray the whole tree with an alkaline solu- 
tion and kerosene emulsion. Some of the formulas recommended 
are as follows : 
Kerosene Emulsion :—Soft soap, one gallon, or hard soap 
(whale oil soap preferred), one-quarter of a pound ; two gallons 
of hot water, and one pint of kerosene. Stir until all are permanently 
mixed, and then dilute with water to one-half or one-third strength. 
This will be found one of the most effective remedies for the Oyster- 
Shell Bark Louse. Another more simple remedy and yet, if faith- 
fully applied, quite effective is a soda wash made by dissolving one- 
half a pound of common washing soda in a pail of water. Alkaline 
