54 TRANSACTIONS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 
small pure groups, separated from each other by rides or 
drives. Close observation showed that the weevils, about the 
latter end of April, had commenced their depredations, and 
very soon they began to appear in alarming numbers. The 
attack threatened to become serious, for the plants, being so 
recently planted, had not got thoroughly established, and 
were not in a fit condition to resist it. Steps were at once 
taken to trap the insects, and so protect the crops against 
their ravages. 
Bags were filled with fresh pine sawdust, and these and a 
number of slabs, about 3 feet in length, sawn from fresh pine, 
were conveyed to the plantations. The slabs were laid out along 
the rides, and also among the plants, at distances apart of about 
30 yards, and beside each slab was laid a small pile of saw- 
dust. The latter was spread out on the ground so as to form a 
band approximately 3 feet long, 9 inches wide, and about 2 inches 
deep. The pine slab was then placed, sawn surface downwards, 
over the sawdust, and in order to facilitate the entrance of the 
weevils, it was slightly raised at one end by placing a small 
wooden peg, about 6 inches long, underneath it. The traps 
should be laid out on some definite plan, so that they may not 
be overlooked when the examinations are made, and that time 
may not be wasted in searching for them.! It is a good plan 
to place a little fresh sawdust underneath the slabs once in every 
three weeks, so that the fresh smell may be maintained. The 
traps should be examined every morning at a fixed hour, the 
best time being from 7 to g o'clock, as later in the day 
the weevils leave their refuge for feeding purposes. The 
weevils may be collected into a wide-mouthed glass bottle, 
a small wooden peg being used for knocking them into 
it, and each day’s collection should be carefully destroyed. 
When the pine slab is lifted, the weevils will be found 
either adhering to its cut surface or on the top of the saw- 
dust. 
Below is given the “catch” of weevils in the two plantations. 
The traps were set in the last week of April, and they were 
regularly examined every morning until the middle of June, 
' The position of each trap may be marked by a stick, or small branch, 
2 or 3 feet long, stuck into the ground beside it.—HOon, Ep. 
