( *9S ) 
Pieces of Iron, for want of larger I made ufe of wha* 
Tools I had, namely, a large Iron Vice, about 90 ft 
Weight, in which I fixed a fmall Anvil of about iz 16 . 
Upon the bright Surface of this Anvil I laid the Steel, 
to which I would give the Vertue, in a Pofition of 
North and South, which happened to be in a Diagonal 
of the fquare Surface of the Anvil } then I took a Piece 
of Iron, 1 Inch Square, and 33 Inches long, of about 
8 ft Weight, having at one End the Figure here repre- 
fented (inp.zyK.) brightly polifhed at^, and taper at 
the other End : Then I held faff down the Piece of Steel 
upon the Anvil with one Hand,and with the other I held 
the Iron Bar aforefaid perpendicular with its Point a 
upon the Steel, and prefling hard, I rubbed the Steel 
with the Iron Bar towards me, from North to South, 
feveral Strokes, always carrying the Bar far enough 
round about, to begin again at the North, to prevent 
the drawing back of the magnetical Force ; Having 
thus given 10 or n Strokes, I turned the Steel upfide 
•down, leaving it in the fame Pofition as to North and 
South, and after rubbing it and turning it, ’till I rubbed 
it about 4Q0 times, it received by degrees more and 
more Strength, and at lafthadasmuch as if it had been 
touched by a ftrong Loadftone. The Place where I 
began to rub was always that which pointed to the 
North, when the Needle was hung, the End where I 
had ended the Stroke turning to the South. Sometimes 
it has happened, that in a few Strokes I gave the Steel 
its Vertue ; nay even in the very firft Stroke one may 
give a great deal to a fmall Needle. This Way I have 
given the magnetical Vertue toNeedles of Sea-CompafTes 
made of one Piece of Steel, as the Fi- 
gure annexed B, To ftrongly, that one 
of the Poles would take up 4, and the other a whole 
Q,q 3 Ounce 
