( 5 *» ) 
A Defer ipt ion of the Loadfione made uje of in the 
foregoing Experiments. 
This Stone weighed exa&ly 6 Pound, one Ounce and 
l Averdupois Weight. Its Form refembled Figure 4. 
Its breadth at the North Pole was 4 Inches $ at the 
South Pole 5 Inches $ the Poles running thro’ the Stone 
in the direction of the prick’d Line. The length of the 
fhorteft fide was 6 Inches of the longeft fide 7 Inches 
i. Its thicknefs at the North Pole was one Inch and a 
half, and at the South Pole one Inch. 
VI* The Specific^ Gravities of federal Metalline Cubes f ' 
in compari/Qn with their like (Bulks of Water. By 
Mr. Fr. Hauskbee, F. S. 
^F^Hefe Cubes were deliver’d to me by Dr. Sloane » 
and fuppofed to be extraordinary in their feveral 
kinds, except the Cold. Their workmanfhip was very 
accurate $ and they were exa&ly of a fize, altho’ they 
differ’d a little from our Meafure. Six of them being 
laid on a Rule, Side by Side, meafured about a tenth 
more than 6 Inches ^ and if their Sides were chang’d, 
they ftill made the fame meafure. And it farther ap~ 
appeared that they were exad, by their agreeablenefs 
in the Weight of their refpe&ive Bulks of Water, as 
may be obfeivcd by comparing them in the following 
Table. 
