J8 



If I lie rcsiills of Dr. .Alniicli oii llic cjiiisc ol" siiscoptiltilil y ;m<l 

 iiiiiimiiity ol' lorcst li-ccs lo disease slicmld prove Iriie in ilie case 

 of tin's disease also, axc may lio])e to he aide lo conlrol the bark 

 dis<'ase in sliade, lawn, and ]»ark Irees, ]»y keeping np I lie water 

 content of the Iree. 



AVhether nnrsery slock serves to inlrodnce Ihe disease into 

 new localities is an important prcdtlem lo he (h'termined hy oh- 

 sei'xalion and ex])erimen(. The preseid method (tf inspection 

 and cnllinu ont wonid he inclljcient if liie fniii;ns lives commonly 

 as a sa}>rophyle at the base of the tree on dead bark and can at- 

 tain a i)arasitic habit with some slii>ht change in weather condi- 

 lions. If, on the other hand, it exists only as a wonnd parasite, 

 then ins[»ections wonld he possible and ihe cntting ont method 

 effective. However, with sn<-h jtroblems as these nndecided, no 

 one can prononnce <lelinite jndgment iii)on the efficiency of the 

 cntting ont method. Once however, these facts are established, 

 moditications may he made in the present method by which its 

 {•ll'ect iveness may }»e insnreil at j»ossihIy a lower cost than can 

 now be expected. 



The present method whicdi the I*ennsylvania Commission has 

 a<lopted of eradicating only si)ots Avhere the fnngns is distinctly 

 ]>arasitic, can accom])Iish a great good in a sanitary way, and 

 (mce snlTicient fads are forthconnng, the method may be altered 

 to snit onr knowledge and thns its efficiency assured. 



THE CHAIK.AIAN: The next ])aper, entitled ^^Recent Notes on 

 the Chestnut ]>ark Disease," w iil l^e delivered by J'rofessor H. K. 

 Fulton, Division of I*alhology, Pennsylvaina State College. 



RECENT NOTES ON THE CHESTNUT liARK DISEASE. 



nV PROFESSOU II R. FI'LTOX, PcuiixiilnDiia State College, State 



Cotlcfjc, Pa. 



The steady ami devastating spread of the chestnut bark dis- 

 ease brings us face to face with a grave situation, and raises 

 many questions of great im])ortance. JMost of these will centre 

 about the three great questions: Is it possible to check effectively 



