50 



there were about twice as many larvae in as near tlie lesions. It 

 would seem that these usually fo]h)\v rallicr lliau precede the in- 

 fection. 



Wood])ecker work was noted in altoiit one-tenth of the oldest 

 lesions, and not at all in the youngest lesions, — much less fre- 

 quently than beetle work. Ants were seldom found actually in 

 tlie lesions. 



It is expected that careful observations of this same tract next 

 year and later, will add much to the value of the present very 

 complete records, which it has been possible to summarize only 

 briefly in this account. 



A good deal is known about this parasite; very nuuh remains 

 to be learned. As far as our i)res(Mit knowledge goes, the prompt 

 stamping out of advance spots of infection, and the general cut- 

 ting off of hopelessly infected tracts, seem to be the only practi- 

 cable means of control. No one perlia])s realizes m(>re keenly 

 than the speaker the ditlicnlties of finding infection and thor- 

 oughly removing it in sparsely settled tracts of large extent and 

 of little value for timber. I have liad occasion tiiis last summer 

 to be on the outskirts of the line of s]»read of this disease through 

 the State, and I have seen numbei-s of these advance spots. It 

 seems that if we can find these sjjots and remove the timber, we 

 will be doing much to check the advance of this disease. In this 

 State the fight is on, and it is the part of all good citizens to co- 

 operate in the work that is being done. (Applause). 



THE CHAIiniAN: Dr. Caroline Rumbold, who is in charge 

 of important research work at the laboratory of the University 

 of Pennsylvania, will ])resent a paper in relation to inediciiial 

 remedies for the chestnut tree bark disease. 



