DARTMOUTH LAKES POWER. — DOANE. 33 



The estimate of the quantity of water used daily at the Stan- 

 works is based on information given by the manager. If cor- 

 rect, the proportion of the rainfall is much larger than the usual 

 estimate. 2,390,880 cubic feet of water every day, equals 

 872,671,200 cubic feet a year, which, spread over 7,300 acres, 

 would be 33 inches, or 59 per cent, of 55,927, the average rain- 

 fall in Halifax. It is, therefore, probable that the estimated 

 capacitj^ is in excels of the ax'tual capacityi. The estima1:ed 

 capacity based on the manager's data is : — 



At liigh-".v;iter inai-k (9-hour day) 365 davs 314.25 h. p. 



At first lock 75 5 " 



At Port Walli.s locks 66 



457.75 " 

 Possible nine-hour power under present 



development 224.25 



Possible increa.se 233.5 " 104 p. c. 



It would be very interesting to know positively the exact 

 quantity of water used by each wheel at the Starr works, and 

 the exact total time run during one year, so that the run-off 

 determined by Mr. Johnston and that at the Starr works could 

 be compared. 



Proc. & Tk.a.vs. X. S. Inst. Sci., Vol XII. Traxs. 3. 



