5. Suckers or icater sprouts, ichich develop at the base cf the 

 cankers, or at the base of the diseased tree. They are frequently 

 very numerous, and grow vigorously for one or two seasons, after 

 which they are usually killed by the fungus. 



However, to be absolutely certain, anyone suspecting the disease 

 should mail generous sam])les of the dead bark, (taking care t» 

 include the area showing tho pustulesj, to the Chestnut Blight Lab- 

 oratory, Zoology lUiiUliiig, University of Pennsylvania, riiiladelphia, 

 Pa. for examination. To prevent spread of infection, each specimen 

 should hi wrapped in a separate paper or enclosed in a paper bag, 

 or a tight box, and securely wra})ped for shipment. With each speci- 

 men there should be information as to where, when, and by whom 

 it was found, (including the post-oflice address of tlie sender.) la 

 regions where the disease is just appearing, much assisiance can 

 be given to the Chestnut Tree Blight Conunissioii by i-eporting it im- 

 mediately and by sending specimens of suspected cases as directed 



above. 



TREATMENT OF INDIVIDUAL TREES 



Experience has shown that it is difiicult to save individual trees 

 after they have been atacked by blight. By special treatment of 

 individual trees, it is possible to greatly j)rolong their lives, or per- 

 haps save them, if the disease has not advanced too far when treat- 

 ment begins. The expense is greatly increased and the chances of 

 success are much more remote with large or old trees and particularly 

 borer infected trees. The details of the treatment of orchard and 

 shade trees is given in another circular, which may be had upon 

 ap])lication to the Commission. 



THE REAL REMEDY 



The only efficient means of combating the disease, so far as known, 

 is to cut down diseased tre-es and burn the infected portions, since 

 the spores and most of the fungal threads are in the bark; if the 

 diseased trees are cut down, barked, and all of the bark carefully 

 burned, and a strict watch kept for new cases of infection as they 

 occur, the disease will very probably be held in check. Great care 

 should be taken to burn all of the diseased bark from the infected 

 trees in order to destroy any infection that may be present. 



In case the infection is on branches of trees of small size, it is 

 better to cut out the diseased portion and burn it entirely than t» 

 waste time in saving the wood by peeling the bark. It is a good 

 plan to burn the refuse over the stump of the infected tree to pre- 

 vent possible future infection from this source. Stumps which have 

 not been burned should be completely peeled of their bark, and this 

 should be burned on nearby brush heaps. Even where perfectly 

 healthy chestnut trees are cut, it is recommended that these stumps 



