41 



-on each side to retain rlie water there, aii<l to eoudiiet it into 

 the cleit in the kdge hek)W, Avhose l)ottoin witli a width ot 

 :iibout forty feet descends from there gradually to the main 

 •channel, al a ])oint eight liundred feet fnrtlier down where it 

 is about one hundred feet wide, and tlows witli a gentle velo- 

 city. One dollar per cubic yard would he a full price for this 

 excavation, and five thousand dollars would he an ample 

 allowance for all tlie expenses in making the fish-way com- 

 plete, making a tntal estimate often thousand dollars. 



At periods of very high water, of course, the efi'ect of the 

 artificial channel would be greatly diminished; hut I imagine 

 that altliough the fish may l)e started in their migration by 

 the Spring fresliets ])enetrating far down into the salt water, 

 yet, that by the time tliey have reached the (ireat Falls, the 

 river will have subsided to its ordinary stage, when a gill-net 

 stretched across just above the fish-way may serve the double 

 purpose of making a remunerative catch, and of diverting the 

 rest into the ascendable channel. The supplying of the pro- 

 posed new course with the requisite volume of water, dcficnds 

 upon the Government's completing the dam of the Water 

 Works, and providing a sutficient waste-way near the Mary- 

 land end. 



If, however, that period nniy be deemed too remote, an ad- 

 <litional expense of about four thousand dollars will connect 

 the channel of Little River Avith the main body of water, by 

 means of an excavation across the u})per end of Falls Island, 

 which Would make the total cost of this route fourteen thou- 

 sand dollars. 



If you should adai)t Jas. i). Brewei' s patent fish-way to 

 the main channel, located as you have suggested, on the west 

 side of the Falls Island and alongside of the falls, it will he 

 necessary to excavate about fifteen thousand five hundred 

 <;ubic yards of rock, in order to provide an incline plane upon 

 which to build the zig-zag walls and for the channels for in- 

 gress and egress with the i)roper rate of inclination. Put- 

 ting this at one dollar per yard, will amount to fifteen thou- 

 sand and five hundred dollars. This price may not be sufii- 

 i;ient, from the fact, that it \v\\\ he difficult to make these ex- 

 cavations without being interferred with by the watei-. 



From the sketch of the fish-way which you have shown me 

 I estimate that it will require ahout two hundred and twenty- 

 five cubic yards of cut-stone, some of which would have to l)e 

 fastened down with iron pins or bolts. This would cost about 

 ten dollars per yard, amounting to two thousand two hun- 

 dred and fifty dollars, and make up a total cost of seventeen 

 thousand seven hundred and fifty dollars. 



J ho])o what I have wj-itien, althougli containing no sug- 



