The streams shown in dotted line were dammed at A and B ; as the 

 water rose it formed two other outlets, C and D. At these points 

 additional dams were put. Later, to reinforce the principal structure, 

 supporting or subsidiary dams, E, F, G and H, were built. On the 

 island, I, formed by the rising water was the first lodge. On the 

 west side are the roads, J, to the birch and maple trees. To the north- 

 east is a canal, K, built in order that the beavers might have access 

 to the grove of aspens, which was situated on rising ground and 

 necessitated making the canal with three dams to hold the water at 

 the different levels. Toward the end of the east wing of the canal is 

 a straight line, L, indicating the small aqueduct or ditch cut by the 

 beavers in order that water might be diverted from the streamlet to 

 ensure an ample supply for the canal. Other small canals, M, are for 

 the purpose of making short cuts when transporting food supplies. 

 The upper pond, N, was made by the second pair of beavers, who had 

 been driven from their own home by fire. The dam forming this pond 

 is O, with subsidiaries P, Q,. The lodge, E, on a point of land which 

 has been formed into an island by cutting a ditch. The second lodge, 

 S, was built by one of the young from the first lodge. 



B.B. 



