44 
cost of the equipment, as the first cost of a sheet tent was about $18, 
which was beyond the means of most fruit growers. We decided to 
construct our first experimental boxes out of paper. 
Light wooden frames were constructed and covered with Heage raw- 
hide building paper. The largest box was 6 feet square at the base 
and 8 feet high (as shown in the photograph). It was put together 
by means of 3-inch butt hinges, and could thus be easily opened by 
drawing the butts from one side. The hood is made of 8-ounce U.S. A. 
duck, and is 6 feet 4 inches at base, 4 feet square at top, and 7 feet 
iene It is kept in place by means of cleats around the top of the 
frame. / 
The hood is first put in place over the top of the tree, after which 
the frame is drawn around and closed (as shown in photograph). 
After the bottom of the hood has been securely fastened to the top of 
the box and a little dirt has been thrown around the bottom the frame 
is tipped back slightly and the chemicals introduced. At the expira- 
tion of from thirty to forty-five minutes the hood is removed, box 
opened, and slipped around the next tree. 
Boxes under 6 feet in height were constructed without hoods and 
the sides were screwed together. These can be handled easily and can 
be used on small trees, where it is not practicable to use the tent. 
We used this method successfully last fall fumigating a block of 
Buffum and Lawrence pears infested with the San Jose scale. It was 
slow work, however, as it was somewhat troublesome to place the hood, 
arrange hie box, and get itready for work. The system, however, was 
as near perfect as we could expect to get it, and we began work to 
overcome the two serious objections. First, we wanted a box with a 
permanent hood, and, secondly, one that could be handled without 
being opened on the sides. At the same time, while we found the raw- 
hide paper perfectly satisfactory on the large hox, it was quite trouble- 
some to put it on the frame smoothly. The edges were first glued and 
then nailed. It was also easily punctured by a broken limb unless 
great care was taken. This last point was not a serious objection and 
we had little or no trouble. A material, however, with more elasticity 
was desirable. 
Taking all these points into consideration, we constructed a box of 
the same dimensions as the paper box, covering it with 8-ounce duck- 
ing, screwing the sides together, and fastening the hood on perma- 
nently by means of narrow strips screwed to the top of the frame. 
Having completed this box, there arose the most serious obstacle 
that had yet confronted us. How were we to handle a box of such 
dimensions with permanent hood and sides? There was only one way 
to do it, and that was to pick the box up and lower it over the top of 
the tree. This we accomplished by means of a 35-foot mast made of 
spar pine, cut from the woods near by, and a12-foot gaff of the same 
material, fitted with ropes and pulleys and rigged to the running gear 
of an ordinary farm cart. By means of this we could raise and lower 
