328 M. White on the Regeneration 
bone of the leg, being caft off by exfoliation, 
was regenerated, and was, in a little time, as 
ufeful as the old one. 
Mr. Le Cat mentions a cafe in the Philofo- 
phical Tranfactions,* of a child of three years old, 
from whom he extrafled the entire tibia, exoftofed 
and carious in its whole extent, between the two 
articulations} which had remained found: this 
great deficiency of bony fubftance was entirely 
fupplied again by nature, and the patient re¬ 
gained a new tibia, much firmer than that which 
he had loft. 
In the fame place, he relates the cafe of an 
adult perfon where he took out three inches and 
ten lines of the bone of the upper arm, which 
was followed by a regeneration of bony matter. 
In this cafe the form of the bone, as well as its 
natural length, was preferved, ft 
Both in compound luxations and in caries,;}; 
the heads of the principal bones, and confider- 
able portions of their bodies have been fawn 
off, and regenerated, fuch as the tibia, fibula, 
humerus, radius, ulna, thumb, and finger} the 
bones were little or no fhorter, and new joints 
were formed, with fuch a degree of motion, 
that the patients found little or no inconve¬ 
nience, and were able to follow their bufinefs 
as well as ever. 
* Vol. LVI. p. 270. 
+ Gooch’s Cafes, vol. I. p. 323. 
} Phil. Tranf. vol. LIX. p. 39. 
Dr. 
