€las* II. i. 4. 16, OF SENSATION. 3*9. 



is by mixing one grain with a drachm of lapis calminaris, and 

 itrew'ing on the cancer fome of the powder every day, till the 

 whole is destroyed. 



Cancers en the face are (aid to arife from the perioftcum, and 

 that, unlefo this be deftroyed by the knife, or by cauftics, th* 

 cancer certainly recurs. After the cancer becomes an open 

 ulcer of fome extent, a purulent fever fupervenes, as from other 

 open ulcere and gradually deilroys the patient. See Oafs II. i«. 



Two very intereftiug cafes have been lately published by Dr. 

 Ewart, of Bath, in which carbonic acid gas, or fixed air, was, 

 kept cunftantly in contact with the open cancerous ulcers of the 

 breaft ; which then healed like other common ulcers. This 

 is rather to be aicr.ihed to the exclufion of oxygen, than to any 

 fpecific virtue in the carbonic acid. As in common ulcers the 

 matter does not induce hectic feyeij, till it has been expofed 

 to the air, and then probably united with oxygen. 



The manner of applying the fixed air, is by including the can- 

 cer in one half, or hemifphere, of a large bladder ; the edges are 

 made to adhere to the fkin by adhefive plaiier, or perhaps a mix- 

 ture of one part of honey with about twenty parts of carpenter's 

 glue might better fuit fome tender ikins. The bladder is then 

 kept conitantly filled with carbonic acid gas, by means of a pipe 

 in the neck of it > and the matter let out at a imail aperture be- 

 neath. 



M. M, Where extirpation is not advifable, as in moll open 

 cancers of the breaft, keep the ulcer carefully from the air, either 

 by applying carbonic acid gas, as above ; or by covering it with 

 charcoal in powder, and a double oiled filk. The charcoal-pow- 

 der ihould be renewed once in two or three days, and at thefe 

 times itihould be pufhed efFby frefh charcoal-powder on lint,fo as 

 not for a moment to expofe it to the air. The charcoal iliculd 

 be frefh taken from the fire,, and powdered very fine as foon as 

 cool, and kept in a bottle to be as little expofed to the air aspof- 

 fible. 



The tumor ihould be fufpended by a fafli or foft cufhion, fo 

 as to keep it as eafy as pollible night and day, and ihould be kept 

 neither too warm nor too cold, as both extremes are injurious. 



Internally, Jix grains of rhubarb every night, for many months, 

 and to drink nothing ftronger than common weak fmalhbeer, 

 confifting of three ftrike of malt to the hogihead, or wine diluted 

 with thrice its quantity of water. 



If cauftics cannot be applied fo as to deftroy the whole, even 

 before ulceration, I fufpetr, that they aggravate the evil, and 

 ;poner defiroy the patient } as, I was well informed, occurred 



ro 



