CONTENTS TO VOL. II.

Tract xxvi. Calculations to ascertain the Density of

the Earth. -1

xxvii. Determination of the place, on the sideof a Hill, where its Attraction is the greatest. 69xxviii. On Cubic Equations and Infinite Series. 7S

xxix. New Project for the Sines, Tangents,

and Secants of Circular Arcs. - 122

xxx. On the Sections of Spheroids and Conoids. 134

xxxi. Comparison of Curves of the same spe-cies. 139

xxxii. On the Cube-root of Binomial Radicals. 141xxxiii. History of Algebra in all Nations. 143

xxxiv. Results of New Experiments in Gun-nery. ------- sos