16 
ALFALFA—ITS GROWTH, DIGESTIBILITY, ETC. 
The animal, food and water 
weighed,.1,149 lbs., J oz. 
The animal and excrements 
weighed .1,113 lbs., 2 oz. 
Loss,. 35 lbs., 14J oz. 
Prof. Carpenter kindly furnished me with the relative 
humidity of the atmosphere during the experiment, and 
his table shows that there is no connection between this 
loss and the humidity of the atmosphere; so this loss 
must have passed off through the skin and lungs. I 
have not been able to obtain any information of this loss 
in the ox. In the human subject there are recorded many 
instances. Flint’s Human Physiology, 1876, page 153. 
Valentin’s Experiment gives one and one-fifth pounds as 
a daily exhalation from the lungs. Valentin found that 
the pulmonary transpiration was more than doubled in a 
man immediately after drinking a large quantity of water. 
Landois and Sterling, Human Physiology, 1885, Vol. 1., 
page 255. “ The expired air is saturated with watery va¬ 
por,” page 264. “ A healthy man loses by the skin in 
twenty-four hours, one sixty-seventh of his body weight 
(Seguin), which is greater than the loss by the lungs in 
the ratio of three to two.” (Valentin, 1843). 
Chemistry of Common Life, Johnston, 1880, page 501 : 
“ The quantity of water which is thrown out into the air 
from the lungs of a healthy man is very variable. It is 
modified by season and climate, by individual constitution 
and state of health, by the amount of exercise taken, by 
the quality of the food, by the quantity of liquid con¬ 
sumed, and by a variety of other circumstances. Gener¬ 
ally speaking, however, the quantity given off by the 
lungs and skin together, is equal to about one-third of the 
weight of the whole food, solid and liquid, which is taken 
into the stomach. Now, the skin alone of a full-grown 
man exhales in twenty-four hours, in ordinary circum- 
