Sir Benjamin Thompson's 
6 2 
in the other 342". The same appearance was observed in the 
following experiments, in which the bulb of the thermometer 
was surrounded by threads of wool, of cotton, and of linen, or 
flax, wound round it, in the like manner as the sewing silk was 
wound round it in the last experiment. 
The following table shows the results of these experiments, 
with the threads of various kinds ; and that they may the more 
easily be compared with those made with the same quantity of 
the same substances in a different form, I have placed the ac- 
counts of these experiments by the side of each other. I have 
also added the account of an experiment, in which 16 grains of 
fine linen cloth were wrapped round the bulb of the thermo- 
meter, going round it nine times, and being bound together at 
the top and bottom of it, so as completely to cover it. 
Heat lost. 
1 
Sheep’s wool , 16 grains, 
surrounding the bulb 
of the thermometer. 
1 
Woollen th read, 16 grains, 
wound roundthebulb 
of the thermometer. 
Cotton wool , t6 grains, 
surrounding the bulb 
of the thermometer. 
Cotton thread, 16 grains, 
wound roundthebulb 
of the thermometer. 
Lint, 16 grains, sur- 
rounding the bulb of 
the thermometer. 
Linen thread, 16 grains, 
wound round the bulb 
of the thermometer. 
Linen cloth, 16 grains, 
wrapped round the 
bulb of the thermo- 
meter. 
Exp. 5. 
Exp. 20. 
Exp. 6. 
Exp. 21. 
Exp. 7. 
Exp. 22. 
Exp. 23. 
7O 0 
_ 
. 

- - 
... - 


bo° 
79" 
4b" 
83" 
45" 
80" 
4 6" 
42" 
5°° 
95 
63 
95 
60 
93 
6 2 
3b 
40 0 
118 
8 9 
117 
83 
115 
83 
74 
3°° 
162 
12 6 
152 
115 
130 
117 
108 
20° 
238 
200 
221 
1 79 
218 
180 
168 
io° 
426 
410 
37 8 
37° 
37b 
385 
338 
Tot, times. 
1118 
934 
1046 
, 832 
1032 
873 
783 
