THE PINE INVESTIGATION. 335 



A trip was made into Wood county on July 28th, returning 

 Aug. 1st. Dying white pine and other species of pine were ob- 

 served along the railroad in Ritchie and Wood counties,and some 

 dying trees examined in Wood county were lound to be infest- 

 ed with the same destructive bark beetle as had been found in 

 other sections. Here were also found some pine trees broken 

 by snow the previous winter, which were infested by bark bee- 

 tles and Clerids. 



After I found that I would go to Europe to study the enemies 

 of Scolytids. I visited the Mayfield Hill Grove on Aug. 10th 

 to make further observations, both with reference to the condi- 

 tion of the dying timber and the habits of predaceous beetles 

 in which I was specially interested. 



I found to my surprise that trees discovered on July 24th, 

 that were infested by the destructive bark beetles were still 

 living. There were no indications in the leaves that the trees 

 were effected, and the bark would even then readily separate. 

 Numerous other trees adjoining the infested ones were 

 being attacked, as was indicated by the balls of turpen- 

 tine escaping from the wounds made by the beetles. The bark 

 of some of the trees that were being attacked on the 24th of 

 July contained half-grown larvae of the bark beetle, and eggs 

 were being deposited in the bark of the recently attacked trees. 



ALARMING CHARACTER OF THE TROUBLE NO FURTHER DOUBT RE 

 GARBING THE CAUSE. 



These observations made it plain to me that the trouble 

 was assuming a most serious character which was even 

 more alarming than it had appeared to me at any prev- 

 ious time. If any doubt had remained in m.y mind as to the 

 possibility of any other cause or associated cause for the death 

 of the trees other than exerted by the destructive hark beetles, 

 there co^lld he none whatever after my observations of the condi- 

 tions among these young and thrifty trees of one of our hardiest 

 species of pines. 



