Iiilfct iuiis (d'cNcrv kind were I'uiiml :ii \ ;n-\ iiiii (lisiaiiccs fi-niii 

 (his liadiv inrcrlcd lice. I'iflv fVcl awav, two saj)liiij^«, six 

 iJiclies in diamdcr, were I'oiind, iijton cliinldnjj:;, to he in fended, 

 and the only .sij;ii of the l)lij^Iit at a distance was a cluster of dead 

 leaves on a teriniiial shoot. On (limbing, a blister about four 

 inches in diameter was found, but pustules had not been formed, 

 the infection having been caused jirobably late last summer. 

 This lesion was about ten feet from the A'ery tip of the leader. 

 It was found to be <::irdled jumI pustules were present at the 

 beiiinninii- of last year's urowtli. 



A short distance away a little to the southeast, a snmll tree, 

 six inches in diameter, was found infected only at the base. 

 Another tree one hundred feet west in the cut-over area was 

 badly infected. This tree was dead, having; been jjirdled with 

 an axe, and the rin,i>- of bark removed; but the ])light was fully 

 developed and the bark was covered with juistules above the 

 portion of the tree i>irdled by the axe. 



The largest center was found on the Keefer tract (see map). 

 Here twenty-three trees, all sa])linos, were found on a circular 

 spot fifty yai'ds in diamter. Only one other tree was found 

 outside this center, and that at the extreme southern end of the 

 tract. 



Another center less than a (piarter of a mile east from the 

 first center described, was found on the line between Hamni 

 and Stuemptle, and the most badly infected tree was one 10 to 

 12 inches in diameter, to which the wires of the fence were 

 nailed. The tree was dead, and the tunnels of borers and the 

 larvae in them were found. This tree showed very well the 

 ai)pearance of the blight on old bark, and from it several good 

 sections were obtained. Around this tree the young sprouts 

 and two saplings, four inches in diameter, were badly infected. 



The strip was worked, in the manner indicated, and when a 

 center was found, every tree within a varying radius depending 

 on the size of the center was carefully examined until no more 

 trees could be found that were infected. Often at the outer 

 limits of one center the edge of another center would be en- 

 countered, and this new spot would be studied in the same way. 

 Here and there, scattering cases of infection were found, not 



