26 
HYDROCYANIC-ACID GAS FUMIGATION IX CALIFORNIA. 
width of the tree, which frequently makes tent pulling much easier 
than when the poles are more broadly separated. The tent should 
always be moved in the direction of the strips of cloth so as to prevent 
pulling the seams apart. 
The successive stages in the covering of a tree are shown in Plate 
V. In brief, they are as follows: When the tops of the two poles 
have been attached to the edge of the tent the width of the tree 
distant from each other, the bottoms are placed at the sides of the 
tree opposite the trunk, as shown in Plate V, figure 1 . Each tent- 
puller then places one foot 
on the end of his pole to pre- 
vent it from slipping and 
pulls on the guy-rope, thus 
raising the upper end of 
the pole and the tent (see 
Plate V, fig. 2). When 
erected to such an angle 
that the poles no longer 
slip, the puller removes his 
foot from the bottom and 
runs away from the pole so 
as to secure a greater lever- 
age on the rope (see Plate 
V, fig. 3). The direction 
of the pulling should be 
not only forward but also 
somewhat to the side so 
as to keep the tent taut 
between the ends of the 
poles and thus prevent it 
from being caught in the 
top of the tree by sagging. 
After covering the tree the 
edges should be lacked in- 
ward so that the tent hangs straight from the tree to the ground, 
thus preventing unnecessary space underneath and making the tent 
lie close to the soil. 
The removal of tents from one tree onto another is done directly 
without first having to pull them off onto the ground. In fact, it is 
easier to draw a tent off of one tree onto another than to raise it from 
the ground onto the tree. Attach the poles to the edge of the tent 
as previously explained. The poles can then be laid flat on the 
ground, as in Plate VI, figure la, or the end with the tent attached 
raised up and leaned against the tented tree, as shown in Plate VI. 
Fig. 6.— Carboy with handles attached to facilitate pour- 
ing the acid and carrying the carboy. (Author's illus- 
tration.) 
