16 SALMONID.E. 



directions were put into Lillymere in September 1837, and 

 Mr. Parker caught five or six in the state of Smolts of seven 

 and a half inches in August 1838. In referring to the par- 

 ticular size of the Pinks in the river Hodder at stated 

 periods, it may be necessary to remark that the Pinks of 

 different rivers, and even in the same river, will be found to 

 vary in size, depending on the time at which the spawn was 

 deposited, the temperature of the season, and other causes. 



I may here observe that I am indebted to the kindness 

 and liberality of Thomas Lister Parker, Esq. for a variety of 

 specimens, as well as for the requisite information concerning 

 them. Of the various fishes, when received, accurate drawings 

 were immediately made, and coloured representations of the 

 natural size of six examples at different ages, in illustration of 

 this subject, were published.* 



A knowledge of the growth of young Salmon in a fresh- 

 water lake, as here described, and the experiment has suc- 

 ceeded elsewhere, may be useful to those gentlemen who 

 possess lakes near Salmon rivers from which they can supply 

 them with Pinks : whether the Salmon thus prevented going 

 to salt water will still retain sufficient constitutional power to 

 mature their roe, and by depositing it in the usual manner, 

 as far as circumstances permit, produce their species, would 

 be a subject worthy of further investigation. That the rate 

 of growth in young Salmon has some reference to the size of 

 the place to which they are restricted, receives further confir- 

 mation in these river, lake, and well specimens. The Smolt 

 taken from the well in July 1838, where it had been con- 

 fined for eight months, was rather smaller in size at that 

 time than the Smolts in the Hodder in the preceding April, 

 though both were Pinks of the same year, namely 1837. 

 The Smolt taken from the lake in August 1838, which then 



* On the growth of the Salmon in Fresh-water. John Van Voorst: London, 

 1839. 



