THE ZOOLOGIST 



No. 84^1.— July. 1911. 



EXPERIMENTS WITH SALMONOIDS AND TURBINES.* 



By Prof. McIntosh, M.D., LL.D., F.R.S., Gatty Marine 

 Laboratory, St. Andrews. 



DuKiNG the progress of the investigations by the Irish Inland 

 Fisheries' Commission of 1899 and 1900 many statements were 

 brought forward as to the injuries to Salmonoids caused by the 

 turbines so frequently used in Irish mills — indeed, complaints 

 of this kind had been brought before the authorities more than 

 ten years previously, and Sir Thomas Brady had been deputed 

 to investigate the subject in 1892. As, however, the matter 

 seemed to be important, and as the experiments carried out by 

 Sir Thomas were few in number, it was resolved again to make 

 careful inquiries. Accordingly the writer carried out experi- 

 ments both in Scotland and Ireland in 1900, a record of which, 

 by the kind permission of the Department in Dublin Castle, 

 and Lord Justice Walker, Bart., Chairman of the Irish Inland 

 Fisheries Commission, is given in the following pages. 



Before detailing the work of 1900, it is well to premise by 

 giving a brief account of the inquiry by Sir Thomas Brady, late 

 Inspector of Fisheries in Ireland. In May, 1892, experiments 

 with Smolts and turbines were carried out by Sir Thomas, under 

 the authority of the Select Committee on the Salmon Fisheries 

 (Ireland) Acts Amendment Bill. He used a small-meshed net 



* Printed by permission of the Irish Executive, Dublin Castle, and Lord 

 Justice "Walker, Chairman of the Irish Inland Fisheries Commission, 1899 

 and 1900. 

 Zool. 4th ser. vol. XV., July, 1911. u 



