CHESTNUT BARK DISEASE. 447 



which contained trees over one foot in diameter, 845 trees over 

 one foot in diameter were marked for removal in the winter 

 of 1912-13, besides numerous trees and sprouts of less diameter. 

 This same winter, in all the woods on the estate, there were 

 2,200 trees over one foot in diameter that were marked for 

 removal. In this experiment it was not attempted to remove 

 the bark from the stumps. In certain badly diseased spots 

 where the stumps were examined, it was found that perhaps 

 30 per cent, of them showed some signs of the fruiting stage 

 of the fungus the following summer. 



The second experiment was started in the fall of 1911, at the 

 Portland state forest. Here certain designated wood lots, eight 

 in number, were gone over, and all trees and sprouts showing 

 cankers were noted and marked for removal. These were 

 removed during the following winter, and the wood and bark 

 disposed of. A partial reexamination was made the next spring, 

 to determine how effectively the work was done. In spite of 

 the fact that the preliminary examination had been carefully 

 made by two well-trained scientific men, and the ground had 

 again been gone over by a practical man who removed the 

 marked trees and any others he saw to be infected, it was found 

 that some of the diseased trees had been overlooked. Six other 

 lots in these woods were also examined, and the blighted trees 

 counted, but not removed, these serving as a check to determine 

 the benefit of removal in the other lots. 



All of these lots were reexamined in the fall of 1912, and 

 the trees removed that winter, as before, from those lots 

 reserved for removal. It is expected to keep up this experi- 

 ment for several years, if warranted by the results or the preva- 

 lence of the blight. As yet it is too early to determine the 

 effect of the removal of the trees on the spread of the blight 

 by comparison with the check lots. So far as the second year's 

 results go, however, there were proportionately just as many 

 newly blighted trees found in lots where all had been removed 

 the year before as in the lots where all diseased trees had been 

 left. 



RECOMMENDATIONS FOR CONNECTICUT. 



We are not advocating concerted action throughout the state 

 to attempt control of the disease by the cutting out method. 

 We are only rarely advising this method, in certain districts 



