is formed upon Moris. Petit's plan, improved by the ligature running upon four cylinders, by which construction, it moves through four times the space at one revolution of the screw, arid in that respect consists its excellence*

Of

[graphic]

Of a compound fracture and an amputation, in consequence 9s it, attended with very remarkable circumstances.

December 12 th, 1756,

Ti/T R. Layman of Diss, a man of genius and great abilities in his profession, desired me to join in consultation with him and some other Surgeons, in the case of a man aged about thirty-five, of an indifferent habit of body, who received the day before a compound fracture upon his leg, by a waggon going over it.

We found a piece of the whole substance, of the Tibia, and another of the Fibula between four and five inches long, exactly corresponding with each other in lengths loose in the wound, and the muscles, &c. contused and lacerated in a very uncommon manner. After After strictly examining, the case, w8 Were unanimously of opinion, that amputation without delay was moll advisable, and it was accordingly performed, in which some circumstahces occurred, that we Were not aware of. We thought we had indisputably determined for the best, in agreeing to take off the limb below the knee, from what we observed externally, and by the examination we made With our fingers ih the wound; but in the operation) the flesh between the bones was found so soft, that it would not relist the knife, and the Fibuid was so loose at its junction with the Libia, that it cou'd not be fawn without grpat difficulty, though the persons who held the limb, took particular care to keep it steady, both above and below: we also found it extremely difficult to take up the artery, inclosed in this soft flesh, which Would not well bear the ligature, and probably from that condition of the flesh, the vessel had liberty to retract sarther than it cou'd otherwise have done \ but in this £ase could the mouth of the vessel have

been

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