INTRODUCTION. 



On the occasion of giving publicity to the following 

 treatise, Mr Mackenzie of Ardross and Dundonnell 

 avails himself of the opportunity to subjoin in an 

 Appendix a discussion on the aflSnity of the species of 

 salmon with that of grUse — ^the result of close observa- 

 tion and protracted practical experience — to supply the 

 only omission in his father's production, written thirty 

 years ago, on the nature and habits of salmon ; as well 

 as to throw out suggestions on the interesting subject 

 for naturalists to meditate upon, and for praiseworthy 

 experimentalists to clear away the obscurities that sur- 

 round them. 



Dundonnell House, Ross-shire, 

 April 1860. 



