text: " We have already mentioned that Mr Shaw having so successfully illustrated the early history of salmon next turned his attention to a cognate subject that of the sea-trout (_Salmo-trutta_?) Although no positive observations of any value anterior to those now before us had been made upon this species it is obvious that as soon as his discoveries regarding salmon fry had afforded as it were the key to this portion of nature's secrets it was easy for any one to infer that the old notions regarding the former fish were equally erroneous