62 
FUMIGATION INVESTIGATIONS IN CALIFORNIA. 
generator should always bt emptied with one and the same hand and 
with this hand "he should never touch the tent; otherwise acid burns 
Fig. 25.— A table which can be used instead of a cart in fumigation over very rough ground. (Original.) 
may result. The estimator should also be foreman of the outfit, as 
tins is the most responsible position of all. Two men work at the 
cart. One measures the water and acid, the other weighs the cyanid. 
The latter holds up the edge of the tent while the acid man places 
the charge beneath the tree. 
(Original.) 
Iii actual field practice the carl is first brought up to one end of 
the row which is to be fumigated (iig. 26). The estimator obtains 
