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XVIII. An Account of a Calculus from the Human Bladder of 
uncommon Magnitude „ By Sir James Earle, F. R. S. 
Read June 15, 1809. 
Sir Walter Ogilvie, Bart, of Dundee, an officer in the re- 
giment of Scotch Greys, at the age of twenty-three, active 
and healthy, was crossing the ferry at Leith, when he received 
a blow on his back, from the boom of the vessel, which para- 
lized the pelvis and lower extremities. During two months 
he was obliged to have his water drawn off; for fourteen 
months he remained in bed, or in a horizontal posture, and 
though he then recovered the use of the bladder, and of his 
limbs, sufficiently to walk across the room with the help of 
crutches, and also to ride, when placed on an easy low horse, 
his health continued many years in a weak and precarious 
state, while the limbs acquired little additional strength or 
powers. 
About twenty years after the accident, perceiving symptoms 
of stone in the bladder, he was examined by Mr. Benjamin 
Bell at Edinburgh, and a stone was felt, which was judged 
to have attained a considerable size ; the operation of extrac- 
tion was then recommended, but was postponed from time to 
time, though his health declined, and the irritation and pains 
in the bladder gradually increased. 
Sir Walter continued to endure this state of existence 
twenty-eight years from the time of the accident, when he 
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