40 SALMONID^E. 



assuming a dusky margin, while, at the same time, the whole 

 of the fish exhibited symptoms of a silvery exterior, as well 

 as an increased elegance of form. The specimen in question, 

 so recently a Parr, exhibits a very perfect example of the 

 Salmon-fry or Smolt. 



" When the migratory change takes place in the young 

 Salmon in the ponds, a marked alteration also occurs in their 

 habits. While in the Parr state, they show no disposition to 

 congregate, but each individual occupies a particular station 

 in the ponds, and should any one quit his place with the 

 view of occupying the position already possessed by another, 

 the intruder is at once expelled with an apparent degree of 

 violence. But so soon as the whole brood has perfected the 

 migratory dress, they immediately congregate into a shoal, 

 and exhibit an anxious desire to effect their escape, by scour- 

 ing all over the ponds, leaping and sporting, and altogether 

 displaying a vastly increased degree of activity." 



" I have elsewhere stated that ' the circumstances attending 

 the developenient and growth of the brood in pond No. 3, so 

 exactly correspond with those of the preceding brood in pond 

 No. 1, that their history would only be a repetition of the 

 former. I may, however, state, that the individuals in pond 

 No. 3 are considerably larger than those in pond No. ] , the 

 difference, at the age of six months, amounting to an inch.'' 

 This superiority in point of size, for the first six months, of 

 those in pond No. 3 over those reared in pond No. 1, was 

 not, however, maintained, with the exception of two indivi- 

 duals, much beyond the first six months, as by the period at 

 which they assumed the migratory dress (two years), no dif- 

 ference existed in regard either to size or condition." 



" The circumstance of the male Parrs with the milt ma- 

 tured, and flowing in profusion from their bodies, being at all 

 times found in company with the adult female Salmon while 

 depositing her spawn in the river, and the female Parrs being in 



