GREASE. loi 



the abfurdity, by enlarging upon the heat it 

 occafions in fummer, or the dirt and filth it 

 harbours in winter. You are told, in return, 

 *' of its utility in preventing injuries from 

 *' flints, bruifes from flones,'' &c. this is the 

 evident effecfl of inftindtive obftinacy and ig- 

 norance, tranfmitted from fire to fon; and is 

 one of the moft palpable reafons that can be 

 produced for the frequent appearance and pro- 

 grefs of this complaint, whether proceeding 

 originally from a hidden accumulation of exter- 

 nal naftinefs or internal impurity. 



As I mean however to give the explanation 

 of this difeafe the face of novelty, I fhall hint 

 only at the impoffibility of removing, from 

 under the loads of hair juft defcribed, the quan- 

 tity of dirt and extraneous matter that muft 

 inevitably lodge there, and continue to accu- 

 mulate, without even a probability of extirpa- 

 tion; and proceed to hazard an opinion, or 

 perhaps a faft, that the proportion of fecreted 

 perfpirable matter, making its efforts here (as 

 elfe where) for a natural difcharge, is obflrucSed 

 by the mafs or filth caked upon the furface, as 

 before explained; and becomes, in the courfe 

 of time, too vifcid and y?/^^;///^/ to be again 

 H 3 abforded 



