740 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [8] 



October 9. — In half an hour in a boat above the dam I see four sal- 

 mon leaps. Everybody says they are plenty up there. I have not had 

 time to hunt them. 



October 15. — The foundation of our new hatching-house by the stream 

 completed to-day. Dimensions, 22 by 18 feet; rather too small an affair, 

 it seems, to write much about, but yet with our deep troughs it has a 

 capacity of 2,560,000. 



The foundation is 18 inches thick at the bottom, and narrows up 

 some at top. The ground being already excavated to a level about 6 

 or 8 inches above the surface of the stream alongside, we excavated a 

 trench for the foundations two feet deep on the northeast and southeast 

 sides, 18 inches deep on the west side. This trench was filled by pouring 

 in a mass of concrete upon the bottom, bedding large stones upon it, and 

 filling in with concrete. The stones were settled into place by heavy 

 wooden mauls, and the same and also smaller ones were used in ramming 

 the concrete into place. After we reached the top of the ground we began 

 carefully placing large stone, and thus built up 15 or 16 inches higher, 

 at which level I propose to lay the sills. The high water of spring will 

 therefore wet our walls some distance above the sills, but we can at any 

 time in the future jack up the building and build the walls higher. 

 The concrete used in this work consisted as follows: 1 part dry London 

 Portlaud cement; 1 part slacked-lime paste (Rockland lime) ; 5 parts 

 fine sharp sand ; about 7 parts stream gravel of mixed sizes. All were 

 measured in a pail, except the gravel, which was estimated in a heap; 

 water not measured. The mortar for laying the first stone above the 

 ground was 1 part London Portland cement, 1 part hme-paste, 6 parts 

 sand. Thence up we used 3 parts Rosendale cement, including a little 

 lime-paste, 3 parts sand. 



October 17, 1879. — Conclude with F. Shaw & Bros, lease of fishery 

 rights, &c, for five years, with privilege of renewing for five more. 



Measured volume of water flowing into the old hatching-house, and 

 found 8.24 gallons per minute. Our aqueduct was laid yesterday, but 

 water was shut off to fix the inlet, so that above represents the volume 

 of the original spring. I am sure that not one-twentieth of it comes 

 from the brook. 



October 18. — Measured (roughly) the volume of water in the spring 

 north of Forbes's house (this was on the site since selected for a third 

 hatching-house), and found it to be between one and two gallons per 

 minute. Low's spring gives to-day .714 gallon per minute. 



October 20. — Left Grand Lake Stream for Bucksport. 



October 26. — Back again at Grand Lake Stream. This afternoon, be- 

 ing in boat up the lake as far as the Sister Islands (two miles from the 

 dam), measured temperature of water in several places. On sunny 

 southerly side of Sister Island, out of the wind, I found 51° F. On 

 northerly side I find 50°; on surface of lake, in deep water, below Mun- 



