LASS H. i. 4. 16. OF SENSATION. 



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

 (brewing on the cancer iorne of the powder every day, till the 

 whole is deftroyed. 



Cancers on the face are faid to arife from the periofteum, and 

 that, unleis this be deftroyed by the knife, or by cauftics, the 

 cancer certainly recurs. After the cancer becomes an open 

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

 open ulcers, and gradually dedroys the patient. See Clafs II. i. 

 6. 13. 



Two very intereding cafes have been lately publifhed by Dr. 

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

 kept conftantly in contact with the open cancerous ulcers of the 

 bread ; which then healed like other common ulcers. This 

 is rather to bealcribed to the exclufion of oxygen, than to any 

 Specific virtue in the carbonic acid. As' in common ulcers the 

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

 o 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 (kin by adhefive plafler, or perhaps a mix- 

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

 glue might better fuit fome tender {kins. The bladder is then 

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

 in the neck of it ; and the matter let out at a fmall aperture be- 

 neath. 



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

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

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

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

 der mould be renewed once in two or three days, and at thofe 

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

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

 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 as pof- 

 ble. 



The tumor fhould be fufpended by a fafh or foft cufhion, f* 

 as to keep it as eafy as poflible night and day, and mould be kept 

 jieither too warm nor too cold, as both extremes are injurious. 



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

 and to drink nothing ftronger than common weak fmall beer, 

 confiding of three drike of malt to the hogfhead, or wine diluted 

 with thrice its quantity of water. 



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

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

 Jooner deftroy the patient j as, I was well informed, occurred 



to 



