.ON INSTINCT. 
S41 
scar of one or another of the wounds, and a sickness at heart, 
that for a little while unmanned me. But all has presently 
passed away. 
There is one dreadful story on record of the effect of strong 
mental disturbance in determining the period of attack. A young 
man had been bitten by a rabid dog. The proper means had been 
applied, and many a month passed over, and he and his friends 
had dismissed all fear. He married. In the wedding night the 
house was alarmed by horrible cries, and, on the door being 
broken open, it was found that he had destroyed his bride, and 
was literally tearing her to pieces. 
Dujotion of the Disease .—This differs in different animals. 
In man it has run its course in twenty-four hours, and it rarely 
exceeds seventy-two. There is, however, one case on record^in 
which, by repeated bleedings, it was protracted to the fourteenth 
day. In the horse it varies from three to four days; in the dog 
from four to six; and in the sheep and ox from five to seven. 
ON INSTINCT. 
Mr. W. F. Karkeek, of Truro. 
[Delivered before the Truro Scientific Institution, in April 1838.] 
To examine the economy of Nature in the phenomena of the 
lower animals, and to compare their instinct with the physical 
circumstances of their external situation, forms one of the finest 
speculations of natural history. The creation is a perpetual 
feast to the mind of man. He sees in it miracles of omnipotence : 
and as the study of Nature throughout is calculated to direct 
his attention to the Great First Cause, he cannot employ himself 
more rationally, I might perhaps say more profitably, than in 
contemplating her works; for, as the Author of Crayon observes, 
there are homilies in them, worth all the wisdom of the schools, 
if we could but read them rightly.’^ Akenside goes beyond him, 
when he says 
The man 
Whom nature charms, with God himself 
Holds converse.” 
At all events it may not be too much, in reference to the subject 
of our panegyric, to pronounce, that the mind of man has gone 
a great way towards praise and thanksgiving when filled with 
><)I- XI. z z 
