316 
“ce 
LEEUWENHOEK AND HIS LITTLE ANIMALS ” 
No. 23. A Fibre of Codfish, consisting of long 
slender Particles. 
Another of the same. 
No. 24. A Filament, conveying Nourishment to 
the Nutmeg, cut transversely. 
Another Piece of the same, in which the Figure 
of the Vessels may be seen. 
No, 25. Part of the Bone or Tooth abovementioned, 
consisting of hollow Pipes. 
An exceeding thin Membrane, being that which 
cover’d a very small Muscle. 
No. 26. Vessels by which Membranes receive 
Nourishment and Increase. 
A Bunch of Hair from the Insect call’d a 
Hair- Worm. 
No. 27. The double Silk, spun by the Worm. 
The Organ of Sight of a Flie. 
For the Construction of these Instruments, it 1s the 
same in them all, and the Apparatus’ is very simple and 
convenient: They are all single Microscopes, consisting 
each of a very small double Convex-Glass, let into a 
Socket, between two Silver Plates rivetted together, and 
pierc’d with a small Hole: The Object is placed on a 
Silver Point, or Needle, which, by Means of Screws of the 
same Metal, provided for that Purpose, may be turn’d 
about, rais’d, or depress’d, and brought nearer or put 
farther from the Glass, as the Eye of the Observer, the 
Nature of the Object, and the convenient Examination of 
its several Parts may require. 
Mr. Leeuwenhoek fix’d his Objects, if they were solid, 
to this Silver Point, with Glew; and when they were 
Fluid, or of such a Nature as not to be commodiously 
" The reader will be better able to follow Folkes’s description if he here 
looks at my figure 1 on Plate XXXI, facing p. 328. 
