376 The Management and Diseases of the Dog. 
dreadfully injured. It being near the Thames, his owner 
took him to the edge of the river, and dashed some water 
over him, and he rallied alittle. Professor Simonds detected 
a fracture of the skull, with pressure on the brain, arising 
from a portion of depressed bone. The dog was perfectly 
unconscious, frequently moaning, quite incapable of stand- 
ing, and continually turning round upon his belly, his straw, 
or his bed. It was acase of coma; he took no food, and 
the pulsation at the heart was very indistinct. 
“T told the proprietor that there was no chance of re- 
covery, except by an operation ; and even then, I thought 
it exceedingly doubtful. I was desired to operate, and took © 
him home. 
“ The head was now almost twice as large as when the 
accident occurred, proceeding from a quantity of coagulated 
blood that had been effused under the skin covering the 
skull. I gave him a dose of aperient medicine, and on the 
following morning commenced my operation. 
“The hair was clipped from the head, and an incision car- 
ried immediately from between the eyebrows to the back part 
of the skull, in the direction of the’ sagittal suture. Another 
incision was made from this to the root of the ear. This tri- 
angular flap was then turned back, in order to remove the 
coagulated blood, and make a thorough exposure of the skull, 
I was provided with a trephine, thinking that only a portion 
of the bone had been depressed on the brain, and it would be 
necessary, with that instrument, to separate it from its attach- 
ment, and then with an elevator remove it ; but I foundthat 
the greater part of the parietal bone was depressed, and that 
the fracture extended along the sagittal suture from the coro- 
nal and lamboidal sutures. At three-fourths of the width of 
the bone, the tracture ran parallel with the sagittal suture 
and this large portion was depressed upon the tunics of the 
brain, the dura mater being considerably lacerated. 
“ The depressed bone was raised with an elevator, and I 
found, from its lacerated edges and the extent of the mis- 
