CONTENTS. 
XXIII. An Account of a remarkable Appearance in 
the Moon , April 22. I 7 CI. By lames Short, 
F.R.S. J p. 164. 
XXIV. A Catalogue of the Fifty Plants from Chelfea- 
Garden, presented to the Royal Society by the 
tVorfhipful Company of Apothecaries for the Tear 
1770. purfuant to the Direction of Sir Hans 
Sloane, Baronet , Med Reg. & Soc. Reg. nuper 
Prafes, by JohnWilmer, M. D . clarijf Societat . 
Pharmaceut. Lond. Soc. Hort. Chelf. PrcefeCt. 
et PraleCt. Botanic . p. 166. 
XXV. Some Ob formations upon the Sex of Flowers, 
by \V. Wation, F. R. S. occafioned by a Letter 
upon the fame Subject, by Mr. Mylius of Berlin, 
p. 169. 
XXVI. Two Letters of Mr. John Harrifon, of Cam- 
bridge in New England, to Mr. Peter Collinlon, 
F. R. S. concerning a fmall Species of W'afps, 
p. 184. 
XXVII. A Letter from Dr. T. Coe, Phyfician y at 
Chelmsford in Efiex, to Dr. Cromwell Mortimer, 
Sec. R. S. concerning Mr. Bright, the fat Man at 
Malden in Ed ex, p. 188. 
XXVIII. The EffeCls of the Hyofcyamus albus, or 
white Henbane; in a Letter to Dr. John Prin- 
gle, F. R. S. from Dr. John Stedman, late Sur- 
geon-Major to the Regiment of the Royal Grey 
Dragoons. p. 194. 
XXIX. The bef Proportions j'or Steam-Engine Cy- 
linders, of a given Content , confided d. By Fran- 
cis Blake, Efji F. R. S. p. 197. 
XXX. Mr. John Bradley ' s Obfervation of the Oc- 
cult at ion of Venus by the Moon ; communicated 
by Mr. James Short, F. R.S . p. 201. 
XXXI. 
