. ’(' 498 ') 
We come to. vrew the Elazor with one of our' befl: 
Mjcrofcopes, one may difcover rh'^r ^le long Streaks 
which caufe the Notches, are no more taken 'away 
by- the Oyl-ftone, than when the Razor is Ground 
On a rough Stone ^ and the only difference is, th?t the 
Streaks of the former are finer than the latter : in 
fliort, when one obferves with a good Microfeope 
the many Notches that are in- the fined Razor, one 
wou*d wonder how^any of them cou’d c'uf fo well; 
This, Sir, is all that I have to fay to you uppn the fub« 
Jeft of Razors at this time.. 
Delft, Septi 10. 1709. 
- S IK, 
Tour Humble Servant; 
. 'I 
Antony Van Leeuwenhoek* 
