( 335 ) 
EXP ER IMEN T IV. 
The Needle was now fhifted, and flood as in the 
fecond Experiment. 
It perform’d 25 Vibrations in 2 ' 41" 
That is, one V ibration in 6 44 
Dip 73 0 45' 
EXPERIMENT V. 
The fame End of the Needle being now touch’d 
twice on each Side, with the Loadflone prefented by 
Right Honourable the Lord Paifley to the Royal 
Society, in the Armour, 
It perform’d the fir ft 25 Vibrations in 1 58 
The next 25 in 1 46 
The 5c Vibrations in 
That is each Vibration in 
The Dip 
3 44 
4> 48 
55' 
EXPERIMENT VI. 
The Needle being turn’d, and /landing as in the 
fecond and fourth Experiments, it perform’d 
The firft 2$ Vibrations in 
The next 2$ in 
The 5-0 Vibrations in 
That is, each Vibration in 
The Dip 
io f 
1 n 
2 OO 
i 57 
3 57 
4> 74 
EXPE- 
