VAHIOLA 
•m 
Synoptical and Comparative Table of Contagions Typhus , and Vario- 
lous Affections, partly referable to Man, but more so to Cattle and 
Sheep. 
Variolous Diseases. Contagious Typhus. 
Symptoms. 
A . Regular and Mild Small-pox. 
Four periods perfectly distinct : — 
Incubation, eruption, serous and pu- 
rulent secretion, desquamation. 
1 . Natural Contagion — Appearance of 
the Malady. 
Six or eight days after its trans- 
mission, a general cough, convulsive 
tremors in the limbs of some beasts ; 
tenderness across the loins. 
2. Eruption — Desquamation. 
From the fourth to the sixth day 
after the commencement of the dis- 
ease : — Eruption of lenticular pus- 
tules, depressed at the summit, sur- 
rounded by a red areola, soon assum- 
ing a grey colour; containing a se- 
rous fluid under the epidermis, milk- 
coloured, and then purulent ; drying 
in the form of scabs ; appearing chief- 
ly around the natural openings, under 
the arms, upon the breasts, between 
the fingers, and in different parts of 
the body. The general symptoms 
are much mitigated, after the erup- 
tion has appeared. 
3. These pustules soon become of 
a grey colour, and form scabs, which 
dry and fall off in the form of scales, 
from the twelfth to the twentieth day. 
Sometimes, during the course of the 
Symptoms. 
A . Regular and Mild Typhus. 
The periods difficult to distinguish ; 
the eruption scarcely forming a part 
of the disease, except at the decline 
of the epizootic. 
1 . Natural Contagion — Appearance of 
the Malady. 
A general febrile state ; shivering ; 
agitation ; prostration of strength ; 
shaking of the head ; abundant dis- 
charge of saliva ; weeping ; cough ; 
constipation. 
2. Eruption — Desquamation. 
From the fifth to the sixth day (Ra- 
mazzini, epiz. 1712). From the se- 
venth to the ninth day ( Layard , epiz. 
1747). From the fifth to the seventh 
day [Dufot, epiz. 1771)- From the 
third to the sixth day ( Vicq d’Azyr, 
epiz. 1774 and 1775). The pustules 
are red, flattened, containing a white 
fluid; thick, and afterwards purulent ; 
appearing chiefly around the natural 
openings, about the breasts, at the 
shoulders, and over the whole body ; 
the patient sometimes better after the 
appearance of the eruption. 
Many authors, without indicating 
the precise period of the eruption, 
speak of pustules and buttons. ( Lan - 
cizi, epiz. Italie , 1 7 1 1 ; Guillot , Drou- 
in , and Herment,t\rvL. Frcnice, 1713; 
Leclerc, epiz. Hollande, 1746; De 
Courtwron, epiz. France , 1746; IJcau- 
mon , epiz. France, 1775 ; Gohier, Du- 
puy, and Girard, epiz. 1818.) These 
two last authors|have spoken of pus- 
tules during the state of convales- 
cence. 
3. These pustules soon form them- 
selves into scabs, which fall oft* in 
scales after the fifth or sixtli day ( Gi- 
rard and Dupuy). 
At the same time, a pustular crup- 
