241 



crew ol' loui' or live men, in liei'«* iiii<iei" I lie dirt-cLioii of a man 

 I'umiliar witli tlie territory, Liie whole region will be carefully 

 scouted. 



All known infections will be destroyed and llie men working 

 in this territory cutting tannery wood, are thorougiily familiar 

 with the appearance, spread, and danger of the disease, so that 

 we can look for local assistance, and that in the end is the aim 

 of our work. 



In conclusion, taking everything into consideration, good 

 results have been obtained by winter work. Persistent leaves 

 are visible to a trained eye for long distances through the woods. 

 However, deep snow or a covering of sleet interferes with the 

 finding of pustules at the base of the tree. Their dying branches 

 begin to show most prominently during late summer, hence 

 August and early September is the ideal time for scouting w'ork. 



The strip along the river actually inspected contains 452 

 acres, and this was covered in about a month of actual inspection, 

 for considerable time was used up in superintending the removal 

 of infected trees. 



A fair estimate is 4 acres per day per man for a close inspec- 

 tion, working the tract in T>0 feet strips. In a very close tree 

 to tree winter inspection, two men can cover four to five acres 

 or two to two and a half acres per day per man. 



LONGEVITY OF LIFE OF SPORES. 



The following report is submitted in response to the request 

 of Mr. E. A. Weimer, that an attempt be made to germinate 

 spores from an infected piece of chestnut, collected in Monroe 

 county in July, 1908, and continuously kept in a moist cell at 

 the Department of Forestry since that date. Forty-four months 

 after the time of collecting, the status of the fungus is found 

 to be as below: 



16 



