xl C: Dy IT AP os Ne TT oS. 
N°. 
XL. Defeription ofa SPRING-BLOCK, defigned to affift a Veffel in 
failing. By Francis Hopkinfon, E/y. of Philadelphia. Honor- 
ed with the Magellanic Gold Medal, by an Award of the Society 
in December 1790. : 
se 
XLI. 4 Botanical defcription of the PODOPHYLLUM DIPHYLLUM 
of Linnaeus, in a Letter to Charles Peter Thunberg, M. D. 
Knight of the Order of Wafa, Profeffor of Medicine and Botany in 
the Univerfity of Upfal, (Sc. &S'c. 
XLII. Odfervations on the confiruétion of Hofpitals, by Mr. Le Roy. 
Member of the Royal Academy of Sciences-—( Extraéted from an 
Effay on the fubjed?, which, with feveral elegant plans, was tranf- 
mitted by the author to the Society, but could not be inferted entire, as 
it contained many remarks of a local nature, refpecting Paris only. 
¢ 
Bk Re a AS 
Page 86 line r for 600° read 60°, é 
$3 at bottom for appendix N°. iv. read N°, Vv. 
89 line 1 dele or. 
Page 
33% 
334 
348 
Page 194. after the Title of the piece N°. 23. read 'To David Rittenhoufe, L. L. D. 
Prefident of the American Philofophical Society. 
247, line 16 for fpot, read pot. Page 251, line 4, for the, read they. 
TRANS- 
