248 MR. KARKEEK, AT ST. AUSTELL FARMERS’ CLUB. 
is an equivalent for food ; and cold, on the other hand, renders neces- 
sary a greater supply of food, by carrying off rapidly the heat which 
its combustion engenders. It also shewed that motion is always 
accompanied by waste of matter in the body — that, in fact, every 
motion, every manifestation of force, is the result of a transforma- 
tion of the structure or of its substance; and it naturally followed 
from this, that an economy of food was necessarily the result of an 
economy of motion. This experiment, which it appears was insti- 
tuted at the request of Professor Playfair, in order to test the value 
of these theories, afforded a most powerful practical illustration of 
them. 
There were five lots of sheep, each lot consisting of five sheep ; 
and the following table will give their weight at the commencement 
and termination of the experiment, with the increase of mutton 
and value at 6d. per lb. ; the weight of roots eaten valued at 8s. 
per ton, and the difference between the increase and cost of the 
same. It should, however, be previously stated, that each of the 
sheep were allowed one pint of oats, but were supplied with as 
many Swedes as they felt disposed to eat. The weight consumed 
was accurately determined by Mr. Morton, who conducted the 
experiment : — 
LOTS, 
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lbs. 
lbs. 
lbs. 
s. d. 
lbs. 
s. d. 
s. d. 
No. 1 . — Fed in the 
open field 
2. — Fed under an 
108 
131J 
f 132 
\ 2-5ths. 
234 
11 8 
1,912 
6 94 
4 104 
open shed 
3. — Solitary under 
104 
28 2-5ths. 
14 24 
1,394 
4 114 
9 3 
an open shed, 
each sheep be- 
ing confined to a 
space 3ft. by 4ft. 
108 
j 130 
1 l-5th. 
22 1 -5th . 
11 1 
1,238 
4 5 
6 8 
4. — Placed under a 
close shed in the 
dark 
102 
| 129 
5. — Kept dark and 
solitary like No. 
4, except each 
sheep was con- 
} 4-5ths. 
2/ 4-5ths. 
13 10 
886 
3 14 
10 8 
fined to a space 
of 3ft. by 4ft 
111 
131^ 
20$ 
10 44 
886 
3 14 
7 3 
In the consideration of the cost of this experiment, the roots only 
are to be taken in the account, and it will then be seen that the first 
lot, which were exposed to the cold, ate more than double the 
