460 Mifcellaneous Obfervations on 
III. I come.now to the confideration of the 
inftances of fpontaneous Hydrophobia. ., Its 
occafional caufes are various ;, fright—fudden 
and. violent affections of the mind—wounds 
received from enraged animals—the drinking 
of cold water,) when the body. has been. pre- 
vioufly heated—exceflive fatigue in hot weather. 
—have all been affigned by, different writers, 
as the occafional caufes of this complaint. . In- 
deed, in fome inftances, it has been difficult, if 
not impofible, to trace its origin to any occafional 
caufe. The following cafes, ‘carefully’ fele&éd 
from_a variety of more equivocal authority, will 
prove the efficiency of the above mentioned. 
occafional caufes in producing this difeafe; and 
alfo demonftrate, that it has fometimes occurred 
where no occafional caufe has apparently. pre-' 
ceded. The five ‘cafes recorded’ by Marcellus: 
Donatus, and confidered, by Morgagni,* as’ 
: | affording, 
to the danger of receiving the infe&tion: two of’ them, by* 
kiffing the patient, and the reft, by having had the falivaim 
contact with frefh wounds in their hands, Yet they alb 
efcaped without ufing any preventive means, Secondly; 
Dr. Vaughan has failed in his experiment of returning” 
the difeafe from the human fpecies to the dog. He inocu-’ 
lated that animal with the faliva of a rabid perfon, “but 
without producing ‘any effeét. “Thirdly, Salmuth and Pal- 
merius are both fond of ‘the marvellous; and their writ- 
ings feem better calculated to excite furprize, than to con- 
vey information. 
» * Epiftol, Anatom, 8, art. 31, 32. 
