72 
COTTON-CAKE. 
events partly, accomplished by the employment of a great 
variety of vegetable materials imported into this country 
from abroad. Now, it is to the physical peculiarities and 
chemical composition of one of these foreign food-stuffs to 
which I beg to be permitted to direct the attention of the 
readers of the Veterinarian . The material to which I refer is 
called cotton-calce, and is obtained chiefly from the southern 
states of North America. It is prepared by submitting to 
pressure the seeds of the cotton-plant {Gossypium Barbaclense), 
by which means an oil is expressed that may be applied to 
many of the purposes for which unctuous oils in general are 
used, and there remains between the plates of the press the 
remaining components of the cotton-seed ; these components 
cohere and constitute the feeding-cake forming the subject 
of this communication. 
Dr. Voelcker, to whom, I believe, we are indebted for the 
first published analyses of cotton-cake, states * that this 
material is introduced into the market in four conditions or 
forms, viz.— 
1. Whole-seedcake. 
2. Thick decorticated cake. 
3. Thin decorticated cake. 
4. Meal produced by grinding decorticated cake. 
In addition to these four varieties I have had a fifth occa¬ 
sionally submitted to me for analysis, which was evidently a 
meal prepared by crushing the whole-seed cake. 
The peculiarities and differences of character enjoyed by 
these five varieties will be best considered after attention has 
been given to their chemical composition, a point to which I 
will now refer. In the subjoined table will be found a state¬ 
ment of the results of the analyses of various samples of 
cotton-cake, as determined in the laboratories of Dr. Voelcker 
and myself; and in order that the theoretical or scientific 
value of cotton-cake may be compared with that of a feeding- 
material of high repute, there is appended an analysis made 
in my laboratory of a sample of pure linseed-cake, manufac¬ 
tured in the Exhibition of 1862. 
* ‘Journal of the Koyal Agricultural Society,’ vol. xix, page 422. 
