CONTE N TS 
O F 
VOL. LXXVI. Part I. 
I. fXBfervations on the Graduation of Afironomical Infruments ; 
with an 'Explanation of the Method invented by the late 
Mr. Henry Hindley, of York, Clock-maker , to divide Circles 
into any given Number of Parts. By Mr. John Smeaton, 
F. R. S. ; communicated by Henry Cavendifh, Efq. F. R. S . 
and S. A. Page i • 
II. A Series of Obfervations on , and a Difcovery of the Period 
of the Variation of the Eight of the Star marked $ by Bayer, near 
the Head of Cepheus. In a Fetter from John Goodricke, 
Efq. to Nevil Malkelyne, D. D. F. R . S. and Afronomer 
Royal. p. 48 
III. Magnetical Experiments and Obfervations. By Mr. Tiberius 
Cavallo, F . R. S. p. 63 
IV. On Infinite Series. By Edward Waring, M. D* F. R. S * 
Lucahan Profejfor of Mathematics at Cambridge. p. 81 
V. Experiments on Hepatic Air. By Richard Kirwan, Efq . 
F . R. S. p. 1 1 8 
VI. Obfetvations on the Affinities of Subfiances in Spirit of Wine. 
In a Fetter to Richard Kirwan, Efq . F. R. S. by John 
Elliot, M. D. p. 155 
VII. 
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