302 
Sir Everard Home on the 
To determine whether this effect had been produced by the 
animal’s over exertion, I procured two hares which had had 
an unusually long run ; and this appearance was conspicuous 
in the lungs of both of them, but more extensively in the one 
than in the other, most probably from that hare having been 
more pressed by the greyhounds. This appearance, which 
gives us the exact form of the large superficial cells, is re- 
presented in the annexed drawing. 
Never having been present at a coursing party, I applied 
to the gamekeeper of Richmond Park, where they course 
regularly during the season twice a week to supply the King’s 
table. Mr. Sawyer informed me that a run of fifteen minutes 
with greyhounds was rarely exceeded, and when a hare is 
pressed for so long a time, it often sinks from exhaustion and 
dies, although the dogs have not reached it ; the greyhounds 
themselves after so long a run are so blown as to be often 
unable to seize the hare with their teeth, although within their 
reach. He considers a run of a quarter of an hour with grey- 
hounds, to press the hare equally with a run with harriers in 
hunting for three hours ; and in both cases the animal fre- 
quently dies from over exertion. 
That the natural state of the air cells in the lungs in which 
the white specks were so abundant, while the more interior 
were filled with extravasated red blood, might be ascertained, 
I got Mr. Russell, whose name is mentioned in the former 
communication, to pour quicksilver into some of the bronchia?, 
and fill the air cells, that they might be distended to the 
utmost, and then immerse the portion of lung so injected 
into rectified spirit, to prevent them from afterwards col- 
lapsing. This was very effectually done, and Mr. Russell 
