62 



FUMIGATIOX INVESTIGATIONS IN CALIFOENIA. 



generator should alwai/s he emptied with one and the same hand and 

 unth 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 

 this 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. 



1 ready for dosing. (Original.) 



In actual field practice the cart is first brought up to one end of 

 the row which is to be fumigated (fig. 26). The estimator obtains 



