276 TRANSACTIONS OF THE CANADIAN INSTITUTE. (Vou. JII. 
of the wind, while the latter was to make a thorough analysis, both 
chemical and bacteriological, of samples of water taken from the various 
points. 
The investigations were carried out under the directions of Mr. C. 
Rust, Assistant Engineer, and N. Kerr, of the Engineer's department, 
Dr. Mackenzie, of the Provincial Board of Health, and the writer on 
behalf of the Institute. On the first trip, besides the above named’ 
gentlemen, Professor Carpmael, Arthur Harvey, President of the Institute, 
Mr. Hamilton, Manager of the Waterworks, and Mr. R. W. Elliot, of the 
Board of Trade, accompanied the expedition; and on many of the sub- 
sequent trips, scientific gentlemen and interested citizens showed the 
importance which they attached to the investigations by joining in, and 
giving the benefit of their suggestions to, the work. 
The apparatus used for ascertaining the 
direction and velocity of the currents was 
a float or drag made of two cross brackets 
of wood covered with linen, a rope of from 
twenty to sixty feet attached, to suit. the 
required depth, and a tin float surmounted 
by a flag, and numbered. The floats were 
made of different sizes, the arm pieces of 
the brackets varying from two and a half 
feet to five feet in length, and the canvas 
from 27 to 54 inches in breadth. These 
drags required to be nicely adjusted by 
hanging weights to them to keep them in 
position, and it sometimes occurred that we 
would lose a float, flag and all, by weight- 
ing it a little too heavily. 
ry 
Stations were placed nine in number along the city front from the 
mouth of the Humber to Victoria Park in water ranging from thirty to 
sixty feet in depth, as follows, No. 1, in Humber Bay, off West Toronto 
Water Works; No. 2, half way between No. 1 and the mouth of the new 
intake; No. 3, at the intake; No. 4, outside the Island in a line with 
Church Street; No. 5, south of the Eastern Gap; No. 6, off Ashbridge’s 
Bay in a line with Leslie Street; No. 7, off the Woodbine; No. 8, halfa 
mile off Victoria Park wharf, and No. 9, one mile south of No. 8, in 70 
feet of water. 
A couple of sextants, a good marine glass, a sounding line, a supply of 
glass-stoppered bottles with apparatus for taking deep water samples, 
