f p02 ) 
clean, and laid in Oyl, I (hould have imagin'd that Rufl: 
had been the caufe thereof. 
Out of thofe five Razors I chofe one, which feemy to 
me to have the feweft Notches, and with that I caufed 
my felf to be llhaved 3 at firft it was very Ibfc and eafie, 
but at laft it grcv7 To painful that I could not endure it. 
Having done thi:^ T .^gain viewed the Razor, and found 
in it many more Notches than when 1 hnt uCcd it. 
I took one of my own Razors, v/hich I did net much 
value, and had ufed it but very litrle fiiice it Irad been 
ground 5 I obferved the Back of it to be pretty rufty, but 
the Edge little or nothing, I fcraped the Ruft off, and 
ground theRazor with a Whetftone,in order to get off the 
Rufty part about the Edge 5 then I paft it over a foftHone 
with Water, that I might grind out thofe fmall Notches, 
which the firft Stone had left, and to make the Edge the 
better. I paft it once or twice more thro Oyl, after which 
I lookt upon it thro my Glafs, and obferved that in fix fe- 
veral places clofe to the Edge there were little holes that 
went quite thro 5 and tho with the naked Eye one could 
perceive but a very little Ruft, and that only in one place, 
yet I could fee very plainly with my Microfcopes that all 
thofe little holes were full of Ruft, and that that Ruft 
had eaten thro the Rafor. 
I waflit the back of my Hand with plain Water, and 
then took the faid Pvazor, and (craped off thefmall Hairs 
with it f then obfefving the Razor again, I could perceive 
that thofe little Holes were turn'd to Notches, and that 
fmall pieces of the Razor were broken out. 
A certain Surgeon ftiow'd me feveral Razors, and a- 
mongft them one that was ground in another Town, and 
had liever been ufed after the grinding 3 in that Razor I 
could perceive feveral Notches, and yet more in another 
that he ufed, and reckoned a very good one. 
In ftiort, Sir, (and to return to your Queftion ) my 
opinion is, that it the Metal of the Razor be too foft, it 
yields 
