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VlII. Letter from Mr. Anth.- Van Leeu- 
wenhoek, F. % S. Containing fome ML 
croJcopicalOhferVations on the Farticlesof Chry- 
J}alli:^ci Sugar^ &c. arid manner of OlferV^ 
mg the Circulation of the Blood in an Eel. 
I Send you h’ercwich my lafl: Remarks,. cx)ncerning the 
Coagulation of Sugar, which I. had. traced upon Pa- 
per near Three Years ago, and cajjfed them to be En- 
grav’d upon a Copper-Plate, after that my Painter had’ 
Drawn them 5, and for as much as fome of thefe fol- 
lowing Obfervations do contradict my former Writings,. 
I make.no fcruple to rejed the paft, and to take up thefe 
which I judge to be better. 
I have faid that the Particles of Sugar, which w^e call 
Sugar- Gandy, confifted of two broad and two narrow 
iides^ and that the other, the top and bottom ran^ 
into a (harp point,, like the Figure of a Wedge or 
Chiflel. 
Since there is not one Man in a Thoufand that knows.^ 
any thing of the Figures which Sugar-Candy aifumes in 
it’s< Coagulation, aliho’ they’ve often tafted of the fame,,, 
I; have thought it not amifs to reprefent it to the Eye. 
Fig, r. A, B, C, D, E, F, G, H, I, K. riprerencs a fmall 
bitr:of Sugar-Candy, oC which one (hall feldom Ce fo 
perfed'a Figure 3 becaufe they are almoft always faften’d 
ro fome other Particles of Sugar, whereby we can only 
dvfcover the Superficies of one fide thereof, as here in this- 
Fugure H. I, E.^F. G, but when it is.taken out of the Sy- 
