of the Salmon in Fresh Water. 



TABLE II. 

 AVERAGE WEIGHT PER FISH OF STANDARD LENGTH MALE SALMON. 



11 



A study of this table shows : 



1. That in July and August there is a difference of only 2| per cent, 

 in the weight, per fish of standard length, of salmon taken at Berwick, 

 and of those taken at Dysart, Buckhaven, &c. 



2. That in October and November there is practically no difference in 

 the weight, per fish of standard length, of salmon from the Spey and 

 Tweed respectively. 



A comparison of the figures given in the above table with those given 

 in Table XIV., p. 71, shows that the average weight per fish of standard 

 length taken at the mouths of rivers, which were examined by Dr. Noel 

 Paton, was in May and June 18 per cent, below that of the Berwick fish, 

 in J uly and August 7 per cent, below the mean of the averages of the fish 

 taken from the different localities, and in October and November 14- per 

 cent, below the mean of Tweed and Spey salmon. The male fish 

 examined by Dr. Noel Paton are thus not so typical of their class as are 

 the female fish. 



Lastly, if the figures in the above table be compared with those given 

 in Table I., it will be seen that, as regards the weight, per fish of 

 standard length, there is a most striking similarity in males and females 

 coming in from the sea. In May and June it is practically the same ; in 

 July and August the excess in the weight of females over males is 

 under 1 per cent. ; and in October and November it is barely over 2 per 

 cent. 



Material, unfortunately, is wanting to enable the same test to be 

 applied to the samples of the upper- water fish. 



* The fish takrn at Fochabers were weighed when alive. Their weight, therefore, in j roportion 

 to their length, is rather greater than that of fish from other localities which were weighed a few 

 hours after being killed. 



