it. i. 4. i$; OF SENSATION; 



may be termed a fuppuration of them ; it differs from the above, 

 as it generally is occafioned by fome external injury, as in decay- 

 ing teeth ; or by veneral virus, as in nodes on the tibia ; or by 

 other matter derived to the bone in malignant fevers ; and is not 

 confined to the ends of them. 



The feparation of the dea'd bone from the living is a work of 

 fome time. See Sect. XXXIII. 3.1. A new and able work on 

 the necrofis of bones is publifhed by I. Ruflel, Edinburgh' 5 

 London, Robinfons. And another by I. P. Weidmann, de Ne- 

 crofi Oflium at Francfort ; Boofey, London ; which is alfo a 

 val uable work. 



M. M. When this difeafe is not formed in fyphilis, or by 

 metaftaiis in fever, but is {imply an inflammation of the periofte- 

 um, or of the folid bone, or of its medullary cells, the method of 

 cure mould confift in evacuations by bleeding and cathartics, 

 and by leeches applied to tlie painful or tumid parts ; and after- 

 wards by taking inwardly foda phofphorata and a decoction of 

 rubia tinftorum, madder-root ; as the former is believed to give 

 folidity to bones, and the latter, as it colours the bones of young 

 or growing animals, is known to be carried thither during their 

 fofter or more fenfitive ftate, and may be therefore worth : a triaL 

 See Innutritio oflium. Clafs I. 2. 2. 14. 



QRDO 



