r i88 ] 
when dircdled by a ikilful hand : I will venture to 
^ay, it is indolence, little or no experience, and an 
ill-grounded fear, in oculifts, both ancient and mo- 
dern, that made them believe thefe kinds of difeafes 
ought to be treated differently from all others. A 
bad prejudice ! which yet feduces a great part of our 
moft able practitioners : but it muft be averred,, that 
they are deceived, if, in order to put it upon the* 
footing of an ill-grounded fear, we muft fay, it has 
often hindered them from helping a number of pa- 
tients, who have perifhed in a miferable manner, by 
not properly attempting their cure. I am willing to 
free myfeif from lo hard a law ; I reprimand both 
antients and moderns, and the opportunities I have 
had of operating upon cancers of the lids and face, 
eafily fhew’d me, that they were very curable, 
and that the cure ought not to be given up to an 
uncertain iffue. 
The examinations I made in thefe kinds of tu- 
mors have informed me, that cancers of the lids, nofe, 
and adjacent parts, have all their feat in the Perio- 
heum, and Perichondrium; and that we cannot hope 
for a thorough cure, without taking them intirely off : 
in a word, the veflels that go from the cancerous 
tumor are hrongly conneded with the Perioffeum 
and Perichondrium, that they feem but one body, 
which becomes at length fo greatly fwclled, that the 
very bone is often affeCted. 
^ When a wen or wart (which is often the begin- 
ning of a cancer), begins to appear, and they en- 
deavour to pull them off, they become irritated, and 
fpread to that degree, that the edges are reverfed, 
and become callous and livid, accompanied with a 
pain. 
