384 On the Power of Fluids to conduct Heat. 
(Air 45°) 
TEMPERATURE 
at top. bottom. 
Time. 45° 85° 
5 min. i588 . 79 
10 53 14 
21 52 69 
31 51 |) 6B 
45 50% 64 
58 50 61 
rh.gt , rf MS 55% 
3 130 ch Greate 5% 
mets , 47 5° 
A 15 — 49 
Oh ge aes. Rena 48 
To determine whether hot and cold water 
being suddenly mixed, and agitated, the hot 
would afterwards rise to the top, was the ob- 
ject of ; pgs 
Experiment 6. 
Air in the room 50°.—About 4) pint’ of 
water of 130° was poured into a cold tumbler 
glass, and immediately after as much water of 
50°; the mixture was agitated for half a minute 
by a deal rod; after which an immersed thermo- 
meter stood at 85°, both at top and bottom; it 
