second day.] VARIETIES OF TROUT. 69 



ambitious of being thought to belong ; and that he 

 will allow my views to be sound, or at least founded 

 upon correct analogies. 



POIET.— Do you know any facts of a similar kind 

 in confirmation of your idea that the parr is a 

 mule? 



HAL.— I have heard of similar instances, but I 

 cannot say I have myself witnessed them. The 

 common carp and the cruscian are said to produce a 

 mixed race, and likewise the rud and the roach ; but 

 I have never paid much attention to varieties of the carp 

 kind. A friend of mine informed me, that in a branch 

 of the Test, into which graylings had recently been 

 introduced, his fisherman caught a fish winch appeared 

 to be from a cross between the trout and grayling, 

 having the high back fin of the grayling, and the head 

 and spots of the trout: this is the more remarkable, 

 if correct, as the grayling spawns in the late spring, 

 and the trout in the late autumn or winter : yet I do 

 recollect that I once took a grayling in the end of 

 November, in which the ova were so large, as nearly 

 to be ready for protrusion. The fisherman of the 

 Griindtl See, in Styria, informed me, that he had seen 

 a fish which he believed to be a mule between the 

 trout and charr, the fins of winch resembled those of a 

 trout, though the body was in other respects like that 

 of a charr. The seasons at which these two species 



