BLEEDlfNG. 2\^ 



jelly, with a small quantity of lluid resembling 

 water floating on its surface. This red jelly 

 moy by washing be rendered of a light buff 

 colour, and exactly resembles the. buff or sise, 

 as it is termed, of iufiamed blood. The most 

 healthv blood, therefore, contains this sise ; and 

 the cause of its not bcin"; consnicuous in such 

 blood is, that coagulation takes place before 

 the red colouring matter can have time to se- 

 parate from it; but as blood that is drawn from 

 an animal labourinir under oeueral infiammation 

 or fever always preserves its fluidity muck 

 longer than healthy blood, and as the red 

 colouring particles are specifically heavier than 

 the fluid with which they arc mixed, they will 

 of course be gradually subsiding as long as the 

 mass continues fluid, leaving a cdat of buff- 

 coloured jelly on the surface. 



It has been observed before, that healthy 

 blood, when suflJ'ered to coagulate, appears ttj 

 consist of two parts, the red jelly termed 

 crassainentmn, and the water, or serum ; and 

 that the former may afterward be separated^ 

 by washing, into two parts, viz. the red co- 

 loured particles, or red globules^ as they are 

 termed by anatomists, and buil-colourt^d jelU> 



Mi M» 



