vi CONTENTS. 
rival, M. D. F. R. and A. S. Member of the Royal So- 
ciety of Phyficians at Paris, &?c. p. 345 
XXIII. On the Degree of Salubrity of the common Air at 
Sea , compared with that of the Sea-Jhore , and that of 
Places far removed from the Sea. In a Letter from John 
Ingen Houfz, M. D. F. R. S. to Sir John Pringle, 
Part. F. R. S. Dated Paris, Jan. 22, 1780. p. 354 
XXIV. The principal Properties of the Engine for turning 
Ovals in Wood or Metal , and of the Injlrument for 
xlra-wing Ovals upon Paper , demonf rated. By the Rev. 
Mr. Ludlam, Vicar of Norton, near Leicefter; com- 
municated by the Aftronomer Royal. p. 378 
XXV. Of Cubic Equations and Infinite Series. By Charles 
Hntton, LL.D. F. R. S. p. 387 
-XXVI. An Account of a mojl extraordinary Degree of 
Cold at Glafgow in January lajl\ together with fome 
new Experiments and Obfervations on the comparative 
Lemper at ure of Hoar-frojl and the Air near to it , made 
at the Macfarlane Obfervatory belonging to the College. 
In a Letter from Patrick Wilfon, M. A. to the Rev. 
Nevil Mafkelyne, D. D. F. R. S. and Aftronomer 
Royal. P*45i 
XXVII. AbftraSl of a Regijler of the Barometer , Thermo- 
meter, and Rain , at Lyndon, in Rutland, 1779. By 
Thomas Barker, Efquire. Communicated by Thomas 
White, Efquire , F. R. S. p. 474 
XXVIII. Journal of the Weather at Senegambia, during the 
■ Prevalence of a very fatal putrid Dif order , with Re- 
marks on that Country. By J. P. Schotte, M. D.; com- 
municated by Jofeph Banks, Efq. P. R. S. p. 478 
