y and
lived for some days afterward.

A number of cabbage maggots placed on the soil impregnated with the
solution died within twelve hours.

To test its actual killing power, used the solution, one ounce kainit
to one pint water, to spray a rose bush badly infested with plant
lice. Effect, all the lice dead ten hours later; the younger forms
were dropping within an hour.

Sprayed several heads of wheat with the solution, and within three
hours all the aphides infesting them were dead.

Some experiments on hairy caterpillars resulted unsatisfactorily, the
hair serving as a perfect protection against the spray, even from the
atomizer.

To test its effect on the foliage, sprayed some tender shoots of rose
and grape leaves, blossoms, and clusters of young fruit. No bad effect
observable 24 hours later. There was on some of the leaves a fine
glaze of salt crystals, and a decided salt taste was manifest on all.

Muriate of potash of the same strength was tested as follows: Sprayed
on some greenhouse camellias badly infested by mealy bugs, it killed
nearly all within three hours, and six hours later not a living insect
was found. The plants were entirely uninjured by the application.

Thoroughly sprayed some rose bushes badly infested with aphides, and
carried off some of the worst branches. On these the lice were dead
next morning; but on the bushes the effect was not so satisfactory,
most of the winged forms and many mature wingless specimens were
unaffected, while the terminal shoots and very young leaves were
drooping as though frosted. All, however, recovered later.

The same experiment repeated on other, hardier roses, resulted
similarly so far as the effect on the aphides was concerned, but there
was no injury to the plant.

Used this same mixture on the caterpillars of _Orgyia leucostigma_
with unsatisfactory effect, and with the same results used it on a
number of other larvae. Used on the rose leaf roller, _Cacaecia
rosaceana_, it was promptly effective.

Tested for injury to plants, it injured the foliage and flowers of
wisteria, the younger leaves of maple and grape, and the finer kinds
of roses.

From these few experiments kainit seems preferable to the muriate, as
acting more effectively on insects and not injuriously on plants. For
general use on plants it is not to be recommended. It is otherwise on
underground species, where the soil will be penetrated by the salts
and where the moisture evapor