DISTRIBUTION OF SPECIES. 165 



Now, I pray, allow me to ask one or two ques- 

 tions on points connected with angling, or 

 rather the natural history of the prized species. 

 And first of their distribution : on a former 

 occasion*, when expressing your doubts as to 

 there being a parr, a distinct species, you 

 mentioned an inquiry you were then engaged 

 in, and some of the results you had obtained, 

 tending to show how it was probable that the 

 ova of the Salmonidse might be conveyed by 

 foreign agents from river to river, from lake 

 to lake, and so the species might be introduced 

 de novo. Pray, have you brought your inquiry 

 to a conclusion ? or what further progress have 

 you made ? Do tell me. 



PISCATOR. It is too much to say that I have 

 brought the inquiry to a conclusion, if by 

 that you mean I have exhausted it. That 

 is not easily done, if ever accomplished, in any 

 matter of physical research. However, I have 

 obtained some additional results, not without 

 interest, as I think you will consider them. 

 I shall mention only those I consider the 

 more important. First, I have found that 



* The Angler and His Friend, p. 260. 

 M 3 



