SCALE READINGS OF MAINE PARR AND ADULT SALMON. 



59 



TABLE 3. 



Size Classes of Parr of the East Branch of the Penobscot, 1901-1902 {one in 1900). 



Scales of 29 parr of the upper river, most of which were taken in September, showed 

 that all but three individuals, were in their third year of age, i.e., 2-plus years old. One 

 of these exceptions was 167 milUmeters total length and 1-plus years old, and two, 

 taken in October, 231 and 235 millimeters in length were respectively in their fourth 

 year, i.e., 3-plus years old. 



Scales of only eight parr from the lower section of the river were examined. In length 

 five fish measured from 136 to 196 milhmeters. One other was only 100 milhmeters long. 

 The latter and two others, 148 and 174 milhmeters in length, appeared to be in their 

 second year, i.e., 1-plus years old. Five of the remainder were 2-plus, and one, 3-plus 

 years of age. The largest fish, a sexually mature male, was the oldest. The ages of all 

 are arranged in table 4 according to the months in which the parr were caught. 



TABLE 4. 

 Age Classes of Parr of the East Branch of the Penobscot. 



The scales of only a few adult Penobscot salmon have been available for examination. 

 In the fall of 1915 three were obtained from the Dead Brook inclosure, used by the 

 Bureau of Fisheries station at Craig Brook for salmon bought of the weir fishermen at 

 Verona Island below Bucksport, in the tidal Penobscot. These fish were usually obtained 

 in May and June, and kept until ripe in the fall, when they were stripped for propagation 

 at the station. The three above mentioned were not weighed but they measured 28, 

 29, and 29J^ inches in total length. The scales indicated that the 28 and 293^ inch 



