of the Salmon in Fresh Water. 



65 



TABLE I. Continued. 



October and November. 



ESTUARY. 



These fish are considered more fully on p. 85, and are not included in Table II. 



UPPER WATER. 



The analysis of such a Table shows : 

 (a) Weight. 



1. The weight per fish of standard length of salmon coining to the 

 mouth of the river increases throughout the season. 



TABLE II. 



Showing Average Weight per Fish of Standard Length of Esttuiry 

 Salmon (see footnote) : 



t Single fish. 



The average in table was calculated by adding the weight per standard fish of all the fish of 

 period, and dividing by the number of fish. It is not an average of the rivers. 



Mr. Archer, from his analysis of the Berwkk-on-Tweed figures 

 (Fishery Reports, Part II., 1895), concludes that fish coming to; the 

 mouth of the river gain in weight to the extent of 3 per cent, from May 

 to August. In our series the increase was 5*8 per cent. The statistics 

 at his disposal did not enable him to study the change after August. 



2. Salmon in the upper reaches are lighter than those at the mouth, 

 and this difference increases a& the season advances, and is nearly twice 

 as great in October and November as earlier in the season. 



