634 
ON APHTHOUS DISEASE AMONG CATTLE. 
mesticated animals of Moravia* * * § . About the same epoch it prevailed 
in many parts of France. Lafosse, junior, observed it in horses in 
the environs of Parist. According to Baraillon, it appeared in an 
epizootic form, in 1775 and 1785, in several cantons of the prin- 
cipality of Moulins};. In 1809, 1810, 1811, 1812, it prevailed 
among cattle throughout the greater part of France ; and those at- 
tacked by it in Picardy and Normandy suffered very severely. 
The learned M. Huzard, senior, was employed by Government to 
oppose it§. The professors of the veterinary schools studied it on 
the Seine and the Rhone], in Dahaun and ArdennesH, Barriere 
and the Pyrennes** * * §§ , Sainton and Tarntt. Nearly about the same 
period aphthce prevailed in various departments of the French 
empire. Peuchet and Potelle observed them in the department of 
the Oise; and Lamberlichi in Italy, in 1825 it. According to M. 
Mathieu, they re-appeared in the Vosges in 1837§§; in Switzer- 
land, in 1838] ||; Messrs. Fabre and Levrat observed them; and 
M. Maret notices their appearance in Auvergne in 183911 IT. At 
the same time, the School at Toulouse, and numerous other veteri- 
narians were studying an aphthous epizootic, which appeared in 
the south, and extended its ravages over an immense extent of 
country. The Sanitary Council of Paris memorialized the adminis- 
trative authorities, in a report addressed to M. le Prefet de la 
Seine***. M. Rayer has traced out a history of them, in the 
“Recueil de Medecine Veterinairettt and M. Levigney has 
given a very accurate description of an aphthous disease which 
prevailed in the Bessin, in 1840 and 1841111- 
Causes . — In the present state of science it will be difficult posi- 
tively to state what are the causes that induce aphthous diseases. 
Most authors attribute them to intemperature of the atmosphere, to 
bad fodder, and to a species of epizootic constitution, which is 
easily created by the influence of prevalent humidity. In point of 
* Instruct. Veter., t. iv, p. 170, Analyse de Iluzard, pere. 
t Cours d’Hippiatrique, p. 284. 
1 Instruct. Veter., t. iv. 
§ Precis sur l’Epizootic dela vall6e d’Auge, 1810. 
|| Compte Rendu d’Alfort et de Lyon, 1811-12. 
% Police Sanitaire de M. Delafond, p. 736. 
** Idem. 
ff Fromage de Feugre, t. iv, p. 265. 
H Recueil, t. iv, Analyse de M. Girard. 
§§ Recueil, annee 1839. 
HU Recueil, annees 1838 & 1839, p. 409. 
^[®f[ Journal des Connoissances utiles, t.9. 
*** Extrait de ce Rapport dans le Journal des V6t6*inaircs du Midi, loco 
citato. 
fft Recueil de Medecine Veterinaire, 1839, p. 142. 
+7+ Idem. 
