( 238 ) 



H I had made a drawing of thefe particles, as they appeared to 

 me, I lliould have reprelented them twice the lize here Ihewn, 

 fo that here is an inllance of the diverdty of fight in different 

 people. 



Moreover, I placed before a microfcope the blood of a fniall 

 Flounder, Jiot diluted with any other liquor, but tlic particles were 

 floating in their own proper ferum ; thel'e particles are fliewn at 

 Jig. 27, between E and F. 



Although thefe particles are reprefented fomewhat fmaller than 

 the former ones, I could not perceive any difference in their lize, 

 and I am certain, that there is not fuch difference, but that the par- 

 ticles of blood, whence its rednefs proceeds, are no larger in a 

 whale than in the fmallell fi(h. 



I alfo put fome particles of the blood of a fmall Flounder in a 

 clear and very" clean glafs, and placed them before a microfcope of 

 lefs magnifying powers than the former, in order that I might Ihew 

 them, even in the dark days of winter, by day-light alone. Thefe 

 particles of blood, in the middle of which the light could be feen, 

 and which was obfei'vcd by the limner, are llicw-n at fig. 23, be- 

 tween G and H. 



I had alfo fome blood lying in a glafs before deeper magnifiers : 

 from thefe the thin ferous liquor was evaporated, and in fome few 

 of thefe oval parts (which were fo feparated, that they did not 

 touch one another), it could be feen that each of them, as far 

 as the eye could ditlinguifli, confilled of fix globules : thefe fix glo- 

 bules the limner imitated as near as he could, as appears at^o-. 2y, 

 between I and K. 



After thefe obfervations, I devifed means to view the circulation 

 of the blood through deeper magnifiers than what I had ufed be- 

 fore, in which attempt I fucceeded fo as to fee the rapid courfe of 

 thefe oval particles in the blood- veffels, by feveral different microf- 

 copes, and the greater the magnifier, the plainer was the courfe of 



