DESCRIPTION of ax INSTRUMENT for performing the OPER- 
' ATION of TREPANNING the SKULL, with more Eafe, Saféty 
and Expedition, than. thofe now in general Ufe. By SAMUEL, 
CROKER KING, E/g; Member of the Royal College of Surgeons 
in, Izeland, and M. R. I. A. 
Tue various accidents and difeafes which have ever been the 
lot of the human frame, mutt have called loudly on mankind to 
exert themfelves for the relief of their fuffering fellow-creatures ; 
from thefe incidental calamities, the different Operations of fur- 
gery have taken their rife, for the performance of which inftru- 
ments judicioufly contrived and properly conftructed were abfo- 
lutely neceflary, as well for the eafe and fafety of the patient as 
for the dexterity of the operator; while fuch were wanting, dan- 
ger to the one, and difficulty to the other, unqueftionably mutt. 
have exifted. 
THE improvements from time to time made in the mechanic 
arts have afforded to the modern pra¢titioners of furgery a 
manifeft 
Read May 7, 
1791; 
