CONTENTS. XV 



A Description of the Eye cf the Seal ; by Mr. 

 Hey, of Leeds. - - - P. 274. 



Observations on the Knowledge of the Ancients 

 reJpeHittg Electricity i hy William Falconer, 

 M. D. F. R. S. Communicated by Dr. Percival 



P. 278. 



Essay on fome fuppojed Druidical Remains, 

 near Halifax in Yorkshire j by Mr. Tho- 

 mas Barritt - - - - P. 292. 



Account of an ancient Monument in Huln 

 Abbey, Northumberland j by John Fer- 



RIAR, M. D. - - - - P. 302. 



On the Nature and Utility of Eloquence j by 

 Richard Sharp, F. S. A. - P. 307. 



Some Properties of Geometrical Series explained 

 in the Solution of a Problem, which hath been 

 thought indeterminate; ^_y John Rotheram, M. D. 



P. 33^' 

 On Halos, by the Rev. James Wood, A. M. 

 Fellow of St. John's College., Cambridge. Commu- 

 nicated by Thomas Percival^ M. D. F. R. S. ^c. 



P. 33^^ 

 Considerations relative to the Nature of Wool, 



Silk, and Cotton, as Objects of the Art of 

 Dying j on the various Preparations, and 

 Mordants, requifite for theje different Substan- 

 ces ; and on the Nature and Properties of 

 colouring Matter. Together with fome Ob- 

 servations on the Theory of Dying in general^ 



and 



