23° DISEASES Class II. i. 4. 17, 



to a quack who was for a time much reforted to, in this part of 

 the country. 



Another method of ufing charcoal-powder is by mixing it with 

 boiled oil, to the confidence of common paint ; and to foak a 

 piece of flannel with this, and cover the ulcer ; and daily to 

 fliove or thruft this off by applying the edge of another piece of 

 flannel, foaked with the oil and charcoal, to the edge of that up- 

 on the ulcer, fo as to change them without the pofhbility of let? 

 ting any air come into contact with the cancerous fore. 



1 7. Arthrocele. Swelling of the joints feems to have its remote 

 caufe in the foftnefs of the bones, for they could notfwell unlefs 

 they were previoufly foftened, fee Clafs I. 2. 2. 12. The epiphy- 

 fes, or ends of the bones, being naturally of a loofer texture, are 

 rooft liable to this difeafe, and perhaps the cartilages and capfu- 

 Jar ligaments may alfo become inflamed and fwelled along with 

 the heads of the bones. This malady is liable to diftort the fin- 

 gers and knees, and is ufually called gout or rheumatifm ; the 

 former of which is liable to difable the fingers by chalk-ftones, 

 and thence to have fomewhat a fimilar appearance. But the 

 arthrocele, or fwelling of the joints, affects people who have not 

 been intemperate in the ufe of fermented or fpirituous liquors ; 

 or who have not previoufly had a regular gout in their feet \ and 

 in both thefe circumftances differs from the gout. Nor does 

 it accord with the inflammatory rheumatifm, as it is not attended 

 with fever, and becaufe die tumors of the joints never entirely 

 fubfide. The pain or fenfibiJity, which the bones acquire when 

 they are inflamed, may be owing to the new vefTels, which (hoot 

 in them in their foft ftate, as well as to the diilention of the 

 eld ones. 



M. M. Haifa grain of opium twice a day, gradually increafed 

 to a grain, but not further, for many months. Thirty grains of 

 powder of bark twice a day for many months. Ten grains of 

 bone-aihes, or calcined hartfhorn, twice a day, with decoction 

 of madder ? Soda phofphorata ? 



18. Arthropuofts. Joint-evil. This differs from the former, 

 as that never fuppurates \ thefe ulcers of the joints are gener- 

 ally efleemed to arife from fcrofula ; but as fcrofula is a difeafe 

 of the lymphatic or abforbent fyltem, and this connfts in the 

 iuppuration of the membranes, or glands, or cartilages about 

 the joints, there does not feem a fufficient analogy to authorize 

 dieir arrangement under the fame name. 



The white fwelling of the knee, when it fuppurates, comes un- 

 der this ipecies, with variety of other ulcers, attended with cari- 

 ous bones. 



19. Caries oJJium> or Nccrofis ojjlum. A caries of the bones 



may 



