AZ0T1SED AND NON-AZOTISED FOOD. 
607 
some fresh theory. I do not believe such results have been before 
noticed by any individual. In thus giving a brief outline of my 
paper, I shall leave it in the hands of more able observers than 
myself either to confirm or to disprove it. 
Yours obediently. 
To Editor of “ The Veterinarian,” 
September 1849. 
In prosecuting, for some years past, experiments on the blood of 
animals—the horse, ox, sheep, and dog—and recording the differ¬ 
ent states of the sanguineous fluid detracted from them under the 
influence of divers kinds of food, results, both significant and con¬ 
clusive, have shewn that the various descriptions of food, specified 
by Liebig as the elements of respiration and nutrition, are, in fact, 
the exciters of two different conditional states of the blood. Food 
wanting in nitrogen or azote produces an excess of serum ; whilst 
substances abounding in nitrogen induce an increase of crassamen- 
tum or clot. These conditions being co-existent in the animal 
economy with the quantitative and qualitative supply of nutriment, 
I have arranged them in the following order:— 
PRODUCERS OF SERUM. 
(Elements of Respiration.— Liebig.) 
Saccharine matter 
Starch 
Gum 
Wheat 
Barley, new 
Turnips 
Carrots 
Pectine 
Bassorine, 
&c. &c. 
PRODUCERS OF CLOT. 
(Elements of Nutrition.— Liebig.) 
Albumen in its various forms 
Vegetable fibrine 
Caseine 
Beans 
Peas 
Oats 
Barley, old 
&c. &c. 
I was first led to institute inquiries into and examine the state of 
the blood in different animals, during the progress of fatting on differ¬ 
ent kinds of fodder, from noticing an undue proportion of serum, when 
compared with the clot, in blood taken from the fattening animals. 
And the prosecution of such observations had demonstrated that, in 
proportion as animals are supplied with food of a non-nitrogenised 
quality, so in bulk does the serum of the blood increase, and the 
clot become less developed. On the other hand, as animals are 
supplied with nitrogenised material, so in proportion does the serum 
diminish, and the clot become more abundant. These two con¬ 
ditional constitutions of the blood may be alternately induced in the 
same animal, by at one time giving food containing or having an 
excess of azotised, at another of non-azotised matter. An animal 
is raised to the highest pitch of muscular condition, as the result of 
