■upon the Leyden Phial. 1005 
Having gone through all thefe experiments as they 
are fet down in the fecond table, we then repeated the 
experiment with the chain, after Mr. henly’s manner. 
Therefult of which, and with the apparatus reverfed) 
will appear in the third table. 
The chain we employed upon this occafion was of 
iron and very rufty, no other being then at hand! 
To avoid every objection it was refolved upon, that all 
the experiments we had made at Dr. higgins’s fhould 
be repeated, but with the two chains inftead of the 
forked apparatus. 
On the 23d of June, by the favour of Mr. parting- 
ton (Dr. Higgins having difpofed of his machine at 
that time) we went through the whole of the experi- 
ments thus circumftanced. The chains employed were 
brafs, and a glafs ftand fupported the ball and point. 
Mr. Partington’s cylinder meafured about thirteen 
inches in diameter : this glafs, with the affiftance of Dr. 
higgins’s amalgama, a£ted powerfully. All thefe expe- 
riments are contained in the fourth table. 
Before this paper is concluded, it is neceffary to cau- 
tion thofe who may be difpofed to repeat the experi- 
ments mentioned in the feveral preceding tables, that a 
ftrift attention be had to every the leaft circumftance re- 
a lative 
