IT 



CONTENTS. 



Page 



Fr. Hauksbee, Ascent of Oil op Planes 659 



Leuwenboeck, Production of Mites, &c. . . 660 

 Ja. Petiver, Catalogue of Rare Plants .... 667 



Ja. Yonge, an Hydropical Case ibid 



J. Craig, on a Monstrous Calf 668 



Fr. Hauksbee, Fishes kept from Air 669 



Patr. Blair, on the Asbestos 67 1 



W. Cheselden, on some Large Bones ibid 



Biographical Notice of Mr. Cheselden .... ibid 



Leuwenhoeek, on Whale's Fibres, &c 67 Z 



Breynius, Observations in Italy 675 



Schelhammer, on Greek Surgical Writers. . ibid 

 Edw. Lhwyd, Observ. in Natural History. . 676 



on the same 677 



Fr. Robarts, Propor. of Mathematical Points 678 

 Fr. Hauksbee, Drop of Oil between Planes 679 



Rd. Hopton, on a Burning Spring 680 



W, Derham, Subterra. Trees at Dagenham 681 

 W. Coorten, Effects of different Poisons . . 684 



Page 



Edw. Lhwyd, Natural History in Wales . . 693 



the same in Ireland 69^ 



Fr* Hauksbee, Force of the Loadstone .... 696 



Specific Gravities of Metals 698 



Wm. Cowper, Dissection of a Body ibid 



Ra. Thoresby, a Hail Storm in Yorkshire . . 699 



Leuwenhoeek, on the Elephant's Skin .... ibid 



W. Derham, on a Lunar Eclipse 700 



Edw. Lhwyd, Nat. Hist, of Ireland ibid 



, Plants in Cornwall 702 



J. Chamberlayne, a Thunder Storm ibid 



Jjcuwenhoeck, Observ, on Muscles 703 



Wm. Cowper, Dissection of a Body 705 



Ra. Thoresby, Stones voided by Urine .... ibid 



Brook Taylor, Ascent of Water 706 



Biograph. Notice of B. Taylor ibid 



F, Hauksbee, Ascent of Water 707 



, Dif. Strata of Coal, &c ibid 



THE CONTENTS CLASSED UNDER GENERAL HEADS. 



Class I. Mathematics. 



I. j4rithmetic, Political Arithmetic, Annuities, Aged Persons, ^c, 



Page Page 



i^OMBINAT. and Alter. E. Thomycroft 209 Logarithmotechnia, J. Craig 609 



Concerning old J. Baylis 299 Measure of Chances, Deraoivre 619 



ArgumenC for Providence, Dr. Arbuthnot 606 Number of Acres in England, Dr. Grew . . 620 



2. Algebra, Analysis, Fluxions, &c. 

 Cubic and Biquadr. Equations, J. Colson . . 334 Equat. of the 3d, 5th, &c. Degree, Demoivre S42 



3. Geometry. 



On Tangents and Conic Sections, H. Ditton 17 Vindicat. of J. Gregory, by D. Gregory . . 328 



Quadrature of Figures, J. Craig 24 Lengtli of Curve Dnes, J. Craig 406 



Solution of Bemouilli's Problem, J. Craig . . 90 Propor. of Math. Points, Fra. Robarts .... 678 



Qnidratrix to the Hyperb. Mr. Perks 302 



Clots II. Mechanical Philosophy. 



1. Dynamics. 



Lran of Attraction, Bcc. John Keill 417 Ascent of Oil up Planes, F. Hauksbee 659 



liBWt of Centripetal Force, J. KeUl 435 On the sanae Subject, F. Hauksbee . . &79, 707 



Oo Falling Bodies, Francis Hauksbee 6l2 On the same, by Brook Taylor 706 



