55 



found 25 per cent of carbonic acid, 26 lime, 28 silex, 2 wa- 

 ter, 18 alumine and magnesia, and 1 iron. We did not de- 

 termine the proportions between the alumine and magnesia. 

 As there is about four per cent of carbonic acid unaccounted 

 for, is it not probable that it is combined with the magnesia. 

 And may not the same conjecture be hazarded respecting the 

 western water limestone, analyzed by Professor Hadley, in 

 which there was also some carbonic acid unaccounted for ?" 



Mr. Sevbcrfs paper was read in July 1S22. The geolo- 

 gical survey was published in 1820. 



Several specimens of native carburetted hydrogen gas from 

 Fredonia and Portland, Chautauque county", were presented 

 by Dr. Elial T. Foote and Mr. Joseph Henry. On passing 

 it through the apparatus used in burninir the artificial -as, it 

 was found to yield a beautiful clear light, corresponding in 

 colour with the purest forms of manufactured carburetted hy- 



*Aj>rill9. The following donations w^ere received: — 

 From his Excellency Governor Clinton, a bottle of the wa- 

 ter used at the grand canal celebration ; from James La 

 Grange, (a venerable citizen now deceased, 1830) the speech 

 of George the Third to parliament, delivered November 30, 

 1774. This was printed at Albany, February 9, 1775, and 

 is curious from its probably being the earliest specimen of 

 printing done in Albany, that is now extant. It purports to be 

 " printed and sold at the printing-office in Barrack-street," 

 (now Chapel-street) ; from Simeon De Witt, two specimens 

 of hydraulic mortar, composed of equal parts of water lime- 

 stone and sea-sand, the one hardened under water, and the 

 other hardened in the air, also a specimen of flat coral ; from 

 T. Romcvn Beck, a collection of fossils and minerals, from 

 the vicinity of Liverpool, (Eng.) received through Dr. Weth- 

 erill, of that place. Among these are the following : Seve- 

 ral specimens of ammonites, belemnites, nautilus, pecten, area 

 and cardium, also jet, and alum shale. 



Mr. Richard V. De Witt read a translation of the Baron 

 De Sacy's annual address before the Asiatic Society of Paris. 



1827, January 22. The curators and librarian reported 

 the receipt of the following donations during the recess of the 

 societv; from L. C. Beck, narive muriate of soda, from Che- 

 shire/ (En^) : hv,m Mo^rs. Webster and Eights, shell marl 

 and various petrifactions from Bethlehem, Albany county ; 

 from Oran E. Morris, a fossil helix, found in the state of Ohio ; 

 from Eikanah Watson, anthracite in quartz, from Poughkeep- 

 sie ; from the author, a manual of mineralogy and geology-, 

 by Ebenezer Emmons, M. D., Albany 1S26; from James 



