388 



THE MONTHLY BULLETIN. 



after discovery and with every precaution to prevent the dissemination of the 

 bacteria. Beginning with the disinfection of the surface of the ground about the 

 infected tree, then burniiisr with a kerosene torch completely defoliating the tree and 

 blackening with the flame the trunk and branches, grubbing out the tree and carefully 

 working over the soil to obtain as nearly as possible all the roots and then the final 



Fig. 127. Inspection ot large orange seedlings for evi- 

 dences of citrus canker. The photograph shows the 

 method of inspecting very tall trees from 26-foot ladders. 

 The men use binocular field glasses. Great care is taken 

 by the inspectors to avoid touching the trees at any time. 

 (Original.) 



spraying of the soil with formaldehyde at the same time thoroughly stirring the 

 ground in order to permit the greatest possible penetration of the disinfectant, and 

 all accomplished with the greatest precision, seems to have reduced to a minimum the 

 danger of spreading the disease. 



The disinfection requirements are very strict and are vigorously enforced. 

 Laborers and any persons who find it absolutely necessary to enter infected groves 

 comply fully with the sanitary precautions as required of the citrus canker inspec- 

 tors, with the difference only, that the inspectors follow the same precautions on 

 entering any property where citrus is grown regardless of whether infection is known 

 to be present or not. A special hat, a one-piece inspection suit, canvas leggings and 

 high shoes compose the inspectors' uniform and completely cover the regular 

 clothing. This uniform is submerged in the disinfectant thoroughly, the bands, face, 

 neck and head are carefully sponged with the disinfectant and this process is carried 

 out unfailingly before and after entering each grove. In passing from grove to 



