of Edinburgh, Session 1869-70. 
197 
exhausted receiver, and the other was at a given instant immersed 
in water. The rate of flow having been determined, the tube was 
bent four times at right angles, and the experiment repeated ; then 
it was not only bent four times at right angles in one plane, but 
bent at one point at an angle of about 135° to its former plane. 
The results of these various experiments are exhibited in 
Table I., page 196. 
It results from these experiments that the bends in the tubes 
had no perceptible influence in modifying the flow — the quantity 
of fluid flowing in the same time being directly as the pressure, 
and very much influenced by rises of temperature. 
II . — Hate of Flow of Defibrinated Blood of Sheep. 
Having determined that the shape of the tubes exerted no 
influence on the flow of fluids through them, we proceeded to 
examine the comparative rate of flow of the defibrinated blood of 
the sheep. The results are recorded in Table II. 
The tube used in this experiment was 908-9 millimetres long, 
and was twice bent at right angles. The diameter was 1-214 
millimetres. 
Table II. 
No. of 
Experi- 
ments. 
Fluid used. 
Diameter 
of Tube. 
Length 
of Tube. 
Tempera- 
ture. 
Pressure. 
Rate of 
Flow of 
100 Cubic 
Cents 
in Seconds. 
18-21 
Water, 
mm. 
1-214 
mm. 
908-9 
10°-5 
mm. 
583-5 
67-6 
22-25 
Defibrinated sheep’s 
blood, 
1 » 
„ 
167 
583-5 
\ 
26-28 
,, 
,, 
i 227-6 
29-31 
, , 
, 
,, 
) 
32-35 
- 
” 
” 
31 "0 
” 
143.4 
2 c 
VOL. VII. 
