1910.] PUBLIC DOCUMENT — No. 31. G9 



itself to propagate it would form from 50 per cent, to 75 per 

 cent, of tlie entire tree growth in this State in a comparatively 

 short time. 



As to the treatment of the pine blight, in some cases spraying 

 lias been resorted to, with supposed beneficial results, but if 

 such results followed spraying, it is very likely due, as Dr. G. P. 

 Clinton of the New Haven station has pointed out, to the clog- 

 ging of the stomata, \vhich prevents excessive transpiration at 

 a critical period. In the case of lawn pines, Mdiich are greatly 

 prized, we have reconnnended as treatment for the blight mulch- 

 ing the soil with horse manure Avell diluted with straw, and 

 applying to the tree fertilizers, such as wood ashes, ground bone, 

 pulverized sheej? manure, etc. 



