Licence: Public Domain Mark
Credit: On the regeneration of animal substances. Source: Wellcome Collection.
![without an union ,* when all obftacles were re¬ moved, by cutting off the ends of the bone, the ofleous matter ihot out as freely as if it had been from a recent frafture, and the broken bone was perfectly united. Since the publication of this cafe, a great number of fimilar ones have occurred, both to myfelf and others, which incon- teftably prove, that though Nature is difappointed in her work, even for a long time together, yet, when all obftrudions are removed, Ihe is ever ready to exert herfelf. In the year 1768, I cut off the upper head of the os humeri of Edmund Pollitt, aged fourteen, whofe cafe is related in the LIX. volume of the Philofophical Tranfa61:ions. This was much corroded with matter, part of it confumed, and followed by an exfoliation of a large piece of the whole fubftance of the bone; yet the head, neck, and part of the body of it were a(5tually regene¬ rated, and the entire ufe of the joint preferved. Mr. William Johnilbn, furgeon at Dumfries, has given us a cafe in the Edinburgh Medical EiTays,* where the whole tibia, the principal bone of the leg, being call 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 Tranfaclions,-]- of a child of three years old,, * Vo!. V. p. 452. 4 Vol. LVI. p. 270. from](https://iiif.wellcomecollection.org/image/b30387796_0007.jp2/full/800%2C/0/default.jpg)
