27 



Gerrit Wendell, Richard Varick De Witt, Samuel L. Mitch- 

 ill. William M. Hopkins, Timothy D. Wilson, Peter Seton 

 Henry, Henry Inman, James P. Boyd, Stephen V. R. Bo- 

 gart, John C. Morrison, Ashbel S. Webster, James G. Tra- 

 cy, Perez Packer and Charles R. Webster. 



June 2d, 1824. The following donations were received : 

 From Henry W. Snyder, 14 silver and 67 copper coins ; 

 from Simeon De Witt, Chinese coins, balanus tintinnabu- 

 lum, haliotis tuberculata, a dried specimen of the pulmo- 

 naria virginica and a betel nut ; from Samuel M. Lock- 

 wood, alabaster from Sandusky, Ohio ; from the President, 

 Van Rensselaer's canal rocks, part 1, 8vo. ; from the Amer- 

 ican Philos. Society, catalogue of its library, 8vo. 



July 14. The following donations were received : From 

 Benjamin Knower, native sulphur, produced by the decom- 

 position of pyrites, red ochre, and sulphate of magnesia, 

 Guilderland ; from Volkert P. Douw, brown ochre, from 

 Glenville, Schenectady county ; from William Mayell, coins 

 and continental money ; from T. R. Beck, a suite of Amer- 

 ican copper coins ; from James Eights, 61 species of insects. 

 Lewis C. Beck deposited the right valve of the unio crassus, 

 Say, var. giganteus, Barnes. 



T. Romeyn Beck read a notice of the family of fossil re- 

 mains, called trilobites, in which after stating the divisions 

 proposed by Brongniart, he enumerated and named the 

 specimens in the Museum of the Institute, belonging to the 

 three genera of asaphus, calymene and paradoxide. He al- 

 so mentioned, that he was unable to refer come of the spe- 

 cimens in the Museum to either of the genera of Brongniart. 

 The collection embraces the following localities — Vicinity of 

 Cincinnati, Ohio ; southern shore of Lake Ontario; Cana- 

 joharie, Montgomery co. ; Hudson ; Crown Point, Essex 

 co. ; Helderbergh mountains ; Coeymans, Albany co. ; 

 Rochester, Monroe co. ; Seneca, Ontario co. This com- 

 munication was accompanied by drawings. 



John R. Bleecker, deposited the specimen of calymene 

 macrophthalma of Brongniart, from which the plaster cast, 

 sent to that naturalist, by Dr. Hosack, and used by him in 

 describing the species, was taken. The locality of this 

 specimen is Ulster county, New-York, and not as stated by 

 Brongniart, the vicinity of Albany. 



Dr. John James deposited a specimen of asaphus, in lime- 

 stone, from Crown Point, Essex county. This beautiful 

 relic i> thus characterised by Dr. Bigsby, (Silliman's Jour- 

 nal, vol. 8, p. 83.) " Many asaphi from Montreal, lakes 

 Seneca and Ontario, have a smooth coat of limestone, gran- 



