336 COMMUNICABILITY OF ASIATIC CHOLF.UA 
of two of the moving apparatus of the machine, the anterior 
columns supporting it. 
From what has gone before, it thus appears — 
1. That the characteristic of this disease in its incipient 
stages, is the absence of every kind of physical alteration, 
externally appreciable, to which we can refer, as a satisfactory 
cause for them, th e. pointing and the intensity of lameness . 
2. That later in the disease, without however heat being 
constant, the hoof betrays, perhaps by exterior circles (rims) 
around it, perhaps by contraction of it, or by corns, the dis- 
ease deeply buried within it. 
3. That to these physical symptoms, which possess great 
diagnostic value where they exist, may be added, as direct 
effects of the navicular disease, either exterior deviations of 
the fetlock joint, the consequence of alterations in the sus- 
pensory tendons, or atrophy of the muscular masses, supe- 
riorly, of the limb. 
4. Lastly, at a very advanced stage of the disease, the 
difficulty the fore limbs experience in action mark the paces 
of the animal with a gait altogether pathognomonic, charac- 
terising the navicular disease in so distinct a manner that it 
is impossible to confound it with any other affection. 
With these different points of diagnosis before us, we are 
going to point out, from experience furnished us of late 
years, what the results of neurotomy are practised at different 
stages of the navicular disease.— Rec. de Med . Vet., Nov. 1852. 
(To be continued .) 
Home Department. 
ON THE COMMUNICABILITY OF ASIATIC CHOLERA 
TO DOMESTICATED ANIMALS. 
By J. Marshall, F.R.C.S., &c. 
(From the British and Foreign Medico-Chirurgical Review , 
for April , 1 853.) 
Various animals, such as the dog, cat, rabbit, guinea-pig, 
goat, and common fowl, have been employed in these ex- 
periments, but the dog more frequently than any other. 
The method of inoculation has also varied. In some, the 
blood of cholera-patients, drawn during life, or the blood 
taken after death, has been introduced, with or without 
delay, into wounds in the cellular tissue beneath the skin, or 
directly into the veins of the animal operated upon; in 
