( 236 ) 



fight with a flat and oval fliape ; in others, the fides of which were 

 turned towards me, I could fcarcely perceive any fenfiblc thick- 

 nefs ; and in lliort, others, where their fides were not exadly turned 

 tov\ ards me, appeared Ibmewhat broader in proportion to their fize ; 

 but I could not dilcover one particle of blood of a perfe6l Ijpherical 

 Ihape. 



The blood of a Salmon appears, to the eye, of a blackifli colour, 

 by reafon of the very great number of thofe particles which give the 

 blood its red colour, and which are more in number in this filh's 

 blood than in others. 



Moreover, I fpread a fmall portion of tliis blood upon a clean thin 

 glafs, and 1 obferved where the particles of the blood lay thin- 

 ncli, that they were of oval fliapes, and in many of thofe oval par- 

 ticles, it could be feen that they were compofed of globules ; and 

 I law a few of them, wherein I could dillinguilh fix globules lying 

 in two rows, three and three. 



But where the particles of blood lay in numbers clofe together, 

 they were fo coagulated, that no oval figures could be feen in 

 them, and all I could obferve was fome confufed particles, fix of 

 which made up one entire particle of blood. 



Thefe renewed inquiries of mine were, with intent to difcover 

 whether I had before been in an error, by faying, that the parti- 

 cles of blood in fiihes, were not oval, but fpherical ; becaufe all 

 thofe perfons who had feen the circulation of the blood at my 

 houfe, were of opinion, that the particles were not oval, but 

 fpherical. 



I have heretofore faid, and do fi:ill believe, that the blood-veflcls 

 in many parts where I have viewed the circulation, are fo extremely 

 flender, that if a large grain of fand was divided into a million of 

 parts, not one of thofe parts could pafs through thofe fmall blood- 

 veflels, \mlefs they were as foft and flexible as the particles of 

 blood. 



I have iifed all the diligence in my power, in order, if poflible, 



