16 



PROTECTION OF PLANTS, 1921-22 



continued in subsequent summers at the request of the Forestry Branch of 

 Ontario for the purpose of determining its nature (especially whether or not it 

 be contagious) and its effects on pine stands suffering from its attacks. The 

 existence of this disease appears to have been reported to the Branch for the 



Fig. 2.— a severely and repeatedly needle-blighted white pine at the right; 

 a healthy white pine at the left. 



first time from the Timagami Forest Reserve in 1905, and again from the same 

 area in 1908, 1912, 1913 and 1917. Mr. C. E. Hindson, Chief Ranger of the 

 Timagami Forest Reserve, wrote in August, 1912, stating that "a large number 

 of pine trees in the vicinity of Timagami Lake have turned brown and appear 

 to be dying." The greater part of the research has been carried out in Tima- 

 gami, an area located about 300 miles north of Lake Ontario. 



