XIPI 
It may be worth while to say that the remedy commonly 
•ecommended for this insect is a spray of the kerosene emulsion 
ipplied by the usual methods of the apple orchard—a measure 
uo expensive for any except extraordinary situations. As 
lam age to the soft maple by this bark louse is done almost 
exclusively in towns, the hydrant water, under strong pressure, 
iffords a cheap and convenient method of attack, if a. small 
)ut strong stream of water be thrown from the nozzle of a 
lose pipe against the under side of branches which bear the 
cottony scales, these may be readily dislodged and swept away 
vith the egg masses beneath them. In some experiments made 
it the office with this method June 21, 1890, in which an inch 
md a half hose with a five eighths nozzle was used, the insects 
with their egg masses were completely washed off where the 
iranch was struck with the full force of the stream. To make 
mre that young hatched from the eggs thus removed will not 
*eturn to fche tree, it would probably be necessary that some 
adhesive mixture should be applied in a circle round the trunks 
n June and July. 
The strawberry thrips, or wheat thrips, as it was called at 
irst, (Thrips tritici ,) has been much less prominent as an injuri¬ 
ous insect during the last two years than for the year or two 
preceding, but has nevertheless been reported by very reliable 
observers as continuouslv destructive to the strawberrv. From 
• - 
Farmingdale, in Sangamon county, for example, it was report¬ 
ed in 1889 by Mr. Benjamin Buckman, that he picked many 
hundreds of cases of strawberries from his plantation damaged 
apparently by the Thrips. The oldest patches showed least in¬ 
jury, while one new isolated patch was nearly worthless. In 
the same region the year before, from one fourth to one half 
the strawberry crop had been destroyed by the Thrips. 
Items of minor economic interest are the appearance in hot¬ 
houses of Fuller's rose beetle (Aramigus fallen ), seen by 
me in De Kalb county, the somewhat unusual abundance in the 
southern part of the State of the forest tent caterpillar 
(Clisiocampa sylvatica), —an insect which occasionally becomes 
a veritable plague, defoliating acres of forests and even invad¬ 
ing orchards,—the unusual numbers of the common tomato 
worm ( Protoparce Carolina ), —extraordinarily subject, however, 
to disease this year,—an unusual abundance, noticed in Central 
Illinois, of the red-necked caterpillar (Danata rninistra ), the 
RED-HUMPED APPLE-TREE CATERPILLAR ((EfJeniasia COncilina ), 
and of the aerial form of the woolly aphis of the apple. 
The pine bark louse, known as the white pine scale (Chernies 
pinicorticis) , never before reported from Illinois, has been de¬ 
tected in the artificial forest on the University premises at 
Champaign, doing great harm to white pine. It not only col¬ 
lects upon the surfaces of the ultimate twigs, but insinuates it¬ 
self among the bases of the needles, and so destroys the foli¬ 
age by sucking the sap. 
