[7 6 INDEX. 



Winch, N. J. Esq. Observations on the Geology of Northum- 

 berland and Durham ....... 1 



Witherite, Mr. Aikin on, found in Shropshire . . . 438 



, analysis of ....... 442 



Whorlbury Camp in Somersetshire, George Cumberland, Esq. 



on the strata at . . . . . . . 216 



Woods, Samuel, Esq. Barometrical measurements by . . 436 



Woolwich, account of the plastic clay beds near . . 284 



Tester, height of 437 



Zinc, ores of, found in Northumberland and Durham . 85 



Zircone, on the primitive crystal and cleavage of . . 248 



London : Printed by William Phillips, 

 George Yard, Lombard Street. 



