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sculling as it were, with their fins and tail, and this pow. 

 erful impetus bears them upwards in the air, on the same 

 principle that a few tugs of the oar make a boat shoot on- 

 wards after one has ceased to row." However this may 

 be, we know that salmon use almost incredible efforts to 

 ascend their native rivers. Modes have recently been 

 adopted in France, in England, Scotland and Ireland, by 

 which they can do so with ease, and which can be much 

 more cheaply applied to mill-dams in Canada, than in any 

 of the countries above mentioned. This is simply by con- 

 structing below each mill-dam a congeries of wooden box- 

 es proportioned to the height of the dam — which could be 

 done, in any weirs I have seen requiring them, for a sum 

 not exceeding twenty dollars. We will suppose that the 

 mill-dam to be passed over is fifteen feet high from the 

 surface of the water, and that the salmon can surmount the 

 height of five feet at a single bound, then it would be only 

 necessary to erect two boxes, each five feet high, one over 

 the other (as in the illustration) to enable the salmon, in 

 three leaps, to reach the waters which nature prompts him 

 to seek for the propagation of his species. In many Cana- 

 dian rivers — such as Metis, Matane, Rimouski, Trois Sau- 

 mons, &c., — this simple apparatus might be put in opera- 

 tion for one-half the sum I have mentioned, and I trust it 

 has only to be suggested to the gentlemen residing on their 

 bfinks to arouse their patriotism and excite them to activi- 

 ty in the matter. There can be no doubt that were the 

 mill-dam's removed, or boxes constrncted adjacent to them, 

 and protection afibrded to the spawning fish, many of the 

 rivers in Upper Canada would again abound with Salmon. 

 I have myself, within a few years, taken the true Salmo 



