534 DISEASES OF THE BLOOD IN DOMESTIC ANIMALS. 
of the frame—is analogous to the erysipelatous scab of the sheep. 
He also traces considerable resemblance between the scurvy of the 
le and the gangrenous coryza of the other; and, according to 
dm, the putrid and adynamic fevers, and the different species of 
typhus in the human being, have much analogy with the diseases 
called carbuncular, but without eruption, which he has described 
Avlien treating of pelohemia. 
“ Such,” adds M. Bouley, “ is an imperfect analysis of the 
treatise of M. Delafond. Let it not be said that he approaches 
too nearly to, or sometimes advocates the old doctrine of hu- 
mourism; his simple object has been to assign their true cha¬ 
racter to various diseases in which certain changes of the blood 
seemed to him to be the primitive source of disease, while the 
lesions of the tissues were only secondary. This method of stu¬ 
dying disease, by making a judicious application of the doctrines 
both of humourism and solidism, is the only one by which we can 
obtain right notions of pathology.” 
M. Delafond regrets that he has not been able to carry his in¬ 
quiries to the extent that he wished. He has been compelled to 
omit typhus in cattle; icterus in the dog and the horse, and variola 
in sheep ; diseases that have their principal seat in the blood: but 
so far as he has gone, and particularly with regard to the changes 
of the blood, he has rendered great service to veterinary medicine, 
by stating them with so much precision and clearness. He has 
given to practitioners a new method of discovering the diagnosis, 
and the treatment of various affections, of which they had before 
a very imperfect knowledge; and on the foundation which he has 
laid much that is scientific and useful will assuredly be esta¬ 
blished. 
We make no apology for this lengthened account of the con¬ 
nexion of the blood with many types of disease. If this essay of 
M. Delafond requires somewhat closer reading and thought than 
we are always accustomed to bestow on these prolegomena of our 
art, we shall bfe amply repaid by the new and accurate conceptions 
which we are enabled to form of the essential nature and charac¬ 
ter of these deviations from health. 
