24 



MR. F. DAY ON RACES AND 



[Jan. 15, 



them ; while the male Salmon-parrs at Howietoun have developed 

 a white anterior edge to the dorsal and anal fins. 



These young migratory Salmon conclusively show that the females, 

 without descending to the sea, may develop eggs in fresh water. And 

 though we know that in the case of rivers in which their access to the 

 sea has been cut off, or their migrating to the ocean prevented from 

 any cause, these fish have usually disappeared from such streams, still 

 we are aware that land-locked Salmon are found in various parts of 

 the globe. It does not seem a visionary dream, but within the 

 bounds of a measurable distance, to anticipate that some Howietoun- 

 reared fish may in a few generations develop land-locked forms, in- 

 valuable to the upper waters of some of our rivers in which migrations 

 seaward are now impossible ; while they will also afford the upper 

 riparian proprietors a chance of securing a breed that will remain 

 in their waters, and cannot therefore be destroyed, as they are 

 now at the mouths of rivers, and in the estuaries, by unscrupulous 

 fishing. 



Before proceeding to discuss the use made of the milt of these 

 fishes, I propose adverting to another series of Salmon, bred at the 

 Fisheries Exhibition, from eggs brought from Canada by Mr. 

 "Wilmot, the Canadian Commissioner, who has kindly given me a 

 series. 



For the purpose of exhibiting the interesting modes of fish- 

 hatching now being carried on in Canada, Mr. Wilmot brought 

 over a considerable number of ova in ice. These, however, com- 

 menced hatching a few days prior to the opening of the building, 

 and continued doing so up to May 23rd. 



All these fish had a double row of teeth along the body of the 

 vomer, from about 112 to 118 rows of scales along the lateral line, 

 from 11 to 12 rows between the adipose dorsal and the lateral line, 

 and 20 rows from the lateral fins to the base of the ventral line. 

 The following give the lengths of the fish, all of which I saw removed 

 from the hatching-trough, as well as the number of bars along their 

 sides. 



August 24, 1883. 



September 27, 1883 



