The CONTENTS. 
du Monceau, F. R. S. communicated in a Letter to 
Sir Hans Sloane, Bar^ Br. R. S. Tranjlated from 
the French by T. S. M. D. F. R. S. 3 90. 
V. A Catalogue of the Fifty Plants Chelfea 
Gar deny prefented to the Royal Society by the 
Company of for the Tear 17 3 9- pur^ 
fuant to the T)ireTtion of Sir Hans Sloane, Bar^’ 
Med. Reg. ^ Soc. Reg. Praf. by Ifaac Rand, Apo- 
thecary y F. R. S. Hort. Chel. Prref. ac Prflec. 
Botan. 406. 
VI. A Phyfieo-mathematical Demonftration of the 
Impojfibility and Infujfciency of Vortices: By 
M. de Sigorgne. Tranfated from the French by 
T.S. F.R.S. 409- 
VII. An Account by David Hartley, M. B. F. R. S. of 
Dr. TrewV Dijfertation concerning the Differ- 
ences of a Human Body before and after Birth y inti- 
tuledy Differtatio epiftolica de differentiis quibufdam 
inter hominem natum & nafcendam intervenien- 
tibiis, deque veftigiis Divini Numinis inde colli- 
gendis 5 fo. Georgio Kramer 0 infcripta cum Tab. 
^n. Audtore Chrifloph. facobo TreWj Noriber- 
grCy 173 '^. 4 ^°* 436 . 
Vill. Some curious Experiments and Obfervations on 
a Beetle, that lived Three Years without Food: 
Communicated to the Royal Society in a Letter 
from Mr. Henry Baker to Alexander Stuart, M. D. 
F. R. S. 441. 
IX. The Difcovery of a perfePi Plant in Semine } 
e. gr. <?//^^’Gramentremulum. By theSzmt. 448. 
I. An 
