The contents. 
XL Samuelis Cbrifliani Hollraanni, Logic. & Metaph. in nova Got" 
ringenh Academia , P.P.O. de Duplicaturoe Fibrarum, in Folds 
quibufcunpue confpicuae Ufu, aliifyue hue pertinentibus^ Conj ecturee. 
79 ^- 
XII. An Account of an Earthquake at Scarborough, communicated 
in a better from Maur. j oh n Ton, jun Efq; Seer, of the Gentle- 
men’s Society at Spalding, to C. Mortimer, M. D. Seer. R. S. 
8o4< 
XII L An Examination of Sea-water frozen and melted again , to try 
< what Quantity of Salt is contained in fuch Ice, made in Hudfon’r 
Streights by Capt. Chriftopher Middleton, F. R. S. at the Requefi 
of C. Mortimer, R. S. Seer. 8od. 
XIV. A Rule for finding the meridional Parts to any Spheroid, ‘with 
the fame ExaElnefs as in a Sphere, by Colin Mac Laurin, F. R. S. 
Communicated by Andrew Mitchel, Efq; F. R. S. 808. 
XV. The parabolic Orbit for the Comet of 1739. obferved by Signior 
Euftachio Zanotti at Bologna. 809. 
XVI. A Letter from the Right Reverend Father in God Robert Lord 
Bi/hop of Corke, to the Right Honourable John Earl of Egmont, 
F. R. S- concerning an Extraordinary Skeleton, and of a Man -who 
gave Suck to a Child. 810. 
XVII. Extracts of Two Letters from the Reverend Dean Copping, 
F. R.S. to the Prelident, concerning the Caefatian Operation per- 
formed by an ignorant Butcher j and concerning the extraordinary 
Skeleton mentioned in the foreging Article. 814. 
XVIII. Part of a Letter from Mrs. — to Sir John Shadwell, 
K?i*‘ M. D- Fellow of the Royal College of Phyficians, London, 
concerjsing the extraordinary Skeleton mentioned in the Two pre- 
ceding Papers. 820. 
XIX. ^Narrative of a new Invention of expanding Fluids, by their 
being conveyed into certain ignifed Vefl’els, and immediately rarefied 
into an elaftic impelling Force , fufficient to give Motion to Hydraulo- 
pneumatical and other Engines, for raifng Water , and other Ufes t 
8cc- by John Payne. 821. 
XX. An Examination of Weft Afliton Well-water , belonging to Tho. 
Beach, Efq ; a Well about Four Miles from that of Holt; by 
Ambrofe Godfrey. 828. 
XXL An Examination of the Chiltenham Mineral Water , by Con- 
radus-Hieronymus Senckenberg ; which may ferve as Method in 
general for examining Mineral Waters. 830. 
XXII. An 
