. · ‘ ° Insecticides and Fimgicides. 19
  The oil is obtained from a grass, Aiidropogon ncirdus,
_ ( of Ceylon and other eastern countries, where it is said to be
, A regarded as a remedy for rheumatism when rubbed on the
T affected parts.
· STICK? PREPARATIONS, TANGLEFGOT, ETC.
4 . · Y Adhesive preparations are of value for insects which · if
~ creep up _or down the trunks of trees, and have become well-
I known in most households from their use in the form of
lp A sticky fly-paper. The sticky substance can be bought in cans _
and pails of the manufacturer, O. & W. Thum Co., Grand
V , Rapids, Mich. It may be applied directly to the bark as a de-
_ terrent against the attacks of peach and other borers, or may
· be used on bands of paper, tin, or straw-board, secured about
the trunk. For the {elm leaf-beetle we have used at the Sta-
, tion a trough—shaped band made of carpet paper, or tin, secur-
I ing its lower edge close against the tree, but leaving the
l upper edge free and at a distance of several inches from the
l ` trunk. The inside of the trough is smeared with the sticky
l» . material, which entraps large numbers of the descending lar-
l vae. Used in connection with spraying arsenate of lead on
j the leaves, it affords ·a very satisfactory means of keeping
l the elm pest in subjection.
I
  · , TAR.
  This substance was once used for the canker worm of ,
l apple, being applied to the trunk to keep the wingless fe-
l males from ascending. It hardens when exposed, and proved
l very injurious to the trees when applied directly to the bark.
The latter difficulty can be avoided by using tarred bands,
and the former by renewing the tar from time to time. The
~ sticky papers can be made.to serve every such purpose, how-
L ever, and are much more convenient.
l For soil-infesting seed-eating insects, such as the wire-
worm, tar may be used withgood effect. A teaspoonful is
( stirred among about a peck of shelled corn after dampening ,