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BULLETIN 275., U. S. DEPARTMENT OF AGRICULTURE. 



TABLE IV. Cull cases of white fir, showing the extent of typical rot and its relation to 

 the wound through which the infection took place Continued. 



Table IV is designed to show whether and in which cases typical 

 rot extends much beyond the wounds forming the entrance for the 

 fungus. Column 7 is the one to be followed (" Typical rot, extending 

 much beyond wounds")- The affirmative is expressed by a cross, x ; 

 the negative by a dash, . Cases which are on the line between the 

 two are marked by a cross in parentheses; they are negligible for 

 our purposes. The first tree to be considered, No. 58, is 123 years 

 old and has a frost crack. From this age, or rather after 126 to 130 



