CONTENTS. 
George Baker, M. D. F. R. S. Communicated to 
the Rev. Thomas Birch, D. D. Sec. R. S. p. io6. 
XVIII. Obfervations for fettlmg the Proportion^ which 
the Decreafe of Heat bears to the Height of Situa- 
tion. FxtraSied from a Letter of Thomas Heber- 
den, M. D. F. R. S. to William Heberden, M. D. 
F R. S. p. A 26. 
XIX. An Account of a Stone voided without Help 
from the Bladder of a Woman at Bury. Communi- 
cated by William Heberden, M. D. F, R. S. 
p. 128. 
XX. ^ Letter from John Bevis, M. D. to the Rev. 
Thomas Birch, D. D. Secretary to the Royal So- 
ciety i containing Afronojnical Obfervations^ made at 
Vienna, by the Rev. Father Jofepli Liefganig. 
p. 130. 
XXL An Account of the Cafe of a fuppofed Hydrophobia : 
In a Letter to the Rev. Thomas Birch, D. D. 
• Secretary to the Royal Society, from the Right Ho- 
nourable James Earl of Morton, Prefdent of the 
Royal Society. p. 139. 
XXII. Fwo theorems, by Edward Waring, M. A. 
Lucafian Profefor of Mathematics in the Univerjity 
of Cambridge, and F. R. S. In a Letter to Charles 
Morton, M. D. Sec. R. S. p. 143. 
XXIII. A fOifertation on the Nature of Evaporation, 
and fever al Phenomena of Air, Water, and boiling 
Liquors: In a Letter, to the Rev. Charles Dodgfon, 
D. D. F. R. S. From the Rev. tiugh Hamilton, 
D. D. F. R. S. Profefor of Natural Philo fop by in 
the Univerfity of DuhWn. p. J46. 
XXIV. Phyfjcal and Meteorological Obfervations, Con- 
jeAures, and Suppoftions. By Benjamin Franklin, 
LL. D. and F. R, S. p. 182. 
• XXIV. Hifo- 
