. Transactions of the American Philosophical Society. pkinfon,--£/?• of Philadelphia. Honor-ed with the Magellanic Gold Medal, by an of the Societyin Ilccemlcr 1790. 33^ XLI. A Botanical defcription of the PODOPHYLLUM DlFHTLLUMof LinnatiSf in a Letter to Charles Peter Thunberg, M. of the Order ofWafa, Profefjhr of Medicine and Botany inthe Univerfty ofUpfal, i^c. bfc. 334 XLII. Obfervations on the conflruclion of Hofpitals, by Mr. Le of the Royal Academy of Sciences.—(ExtraBed from anEffay on the fiibjecl, which, ivith feveral elegant plans, ivas tranf-mitted by the
. Transactions of the American Philosophical Society. pkinfon,--£/?• of Philadelphia. Honor-ed with the Magellanic Gold Medal, by an of the Societyin Ilccemlcr 1790. 33^ XLI. A Botanical defcription of the PODOPHYLLUM DlFHTLLUMof LinnatiSf in a Letter to Charles Peter Thunberg, M. of the Order ofWafa, Profefjhr of Medicine and Botany inthe Univerfty ofUpfal, i^c. bfc. 334 XLII. Obfervations on the conflruclion of Hofpitals, by Mr. Le of the Royal Academy of Sciences.—(ExtraBed from anEffay on the fiibjecl, which, ivith feveral elegant plans, ivas tranf-mitted by the author to the Society, but could not be infertcd entire, asit contained many remarks of a local nature, refpeHing Paris only. 34S ERRATA. Page 86 line i for Cca read 60°. 88 2t bottom for appendix N. iv. rtaJ N°. v. 89 line I dele /or. Page 194. after the Title of the piece N°. 23. rtaJ To David Rittcnhcufe, L. L. of the American Philofophical , line 16 forfpot, nad pot. Page 251, line 4, for the, r<raithey. TRANS-. TRANSACTIONS O F T H E American Philosophical Society, &c. N^. I. CofJjeHures concerning the formation of the Earth, i^f*in a letter from Dr. B. Franklin, to the Abbe Soulavie, Paffey, September JJ, 1782. Read , 1788. RETURN the papers with fome correftlons. I did not find coal mines under the Calcareousrock in Derby Shire. I only remarked that at the loweftpart of that rocky mountain which was in fight, therewere oyfter fhells mixed in the ftone; and part of the highcounty of Derby being probably as much above the levelof the fea, as the coal mines of Whitehaven were belowit, feemed a proof that there had been a great bouleverfe-ment in the furface of that Tfland, fome part of it havingbeen depreffed under the fea, and other parts which hadbeen under itbeingraifed above it. Such changes in the fu-perficial parts of the globe feemed to me unlikely to happenif the earth were folid to the centre. I therefore imaginedthat the in
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