FOREST PATHOLOGY IN FOREST REGULATION. 45 



TABLE II. 'Condensed data on the pathology of the white fir Continued. 



Another column concerns the apparent condition of the tree (Table 

 II, column 9) and indicates the appearance of health of the crown, 

 taking the healthy, thrifty tree as normal (indicated by one cross) 

 and marking the degree of deviation from the normal in the usual 

 way. Thus, one cross in parentheses, (x), means that the tree is an 

 exceptionally healthy one ; two crosses (not in parentheses) indicate 

 that the crown is rather poor, either in development or that the color 

 is abnormal, etc.; and a tree having a very much underdeveloped 

 and sickly looking crown is marked with three crosses. The personal 



