C 9i ) 
IL'JLetter to t/?e Royal Society concerning the Tar 
ticks of Fat. (By Mr. Leeuwenhoek, F. (?(. S*. 
Tranflated from the Dutch by John Chamber- 
layne, EJq^ 
Delft, Alay iji, 1722; 
I Take the Liberty to lay before you the following 
Oblervations, which I made about two Y ears paft. 
I have formerly laid, that the Matter which we call 
Meal, or Flower, in Wheat, Rye, Barley, Oats, and in 
all Ibrts of Beans, is lliut up as it were in little Cells or 
Chambers, and that thole little Cells are leparated from 
each other by thin Membranes, which are thinnell in 
Wheat. And foralinuch as in the Enquiry into what 
is called the Feriofteum of an Ox or Sheep, I have 
often broke in Pieces the fat Particles thereof^ and as 
often viewed thro’ a Microfeope the laid broken Par- 
ticles, lb have I likewile placed a few of the fat Glo- 
bules upon a clean Glafs Plate, and afterward held the 
faid Glals Plate over a Coal Fire, or the Flame of a 
Candle, fo long, till they were all melted and reduced 
into a liquid Matter ; fo that not only the Fat, which 
was lliut up in the Skin of the fat Globules, but like- 
wife the Skin itfelf was reduced to a fluid Matter ; and 
thereupon I immediately brought it before my Sight 5 
and viewing it with Attention, perceived, when the 
melted Fat was cold, that there were different Mat- 
ters inclos’d in the laid fat Globules ; for as much as 
there appear’d an inconceivable great Number of ex- 
ceeding linall coagulated Particles, and the reft of the 
S Parrs 
