548 TRANS. OP THE ACAD. OF SCIENCE. 



Dr. Wislizenus stated that he had often tried to find traces 

 of ozone in the atmosphere of the city, without discovering 

 any, but that, a few days since, he had made some experi- 

 ments in the country with perfect success. 



November 7, 1865. 

 The President, Dr. Engelmann, in the chair. 



Eight members present. 



Letters were read from the K. K. Patr.-okonom. Gesell- 

 schaft, Prague, Oct. 6, 1864, and May 26, 1865; K. Acca- 

 demia di Scienze, Lettere, ed Arti di Padova, 1865; Naturf. 

 Gesellschaft in Emden, Aug. 1, 1865 ; Schweizerische Na- 

 turf. Gesellschaft, Bern, April, 1865, & March, 1865; Amer. 

 Phil. Society, Philad., March 2, 1865, acknowledging receipt 

 of the Transactions, and concerning publications in exchange. 



The following publications were laid upon the table: 



Bulletin tie la Socie'te Imp. Zool. d'Acclimatation, Paris, T. ii., No. 7, 

 July, 1865, from the Society. Naturf. Gesellschaft Graubiinclens : Jahres- 

 bericht, x. Jahrg. 1863-4, from the Society. Schweizerische Naturf. 

 Gesellschaft zu Zurich: Verhandl., 1864, from the Society. Naturf. 

 Gesellschaft in Bern : Mittheil. No. 519-553, from the Society. Naturf. 

 Gesellschaft in Emden : Jahresbericht, 1864, from the Society. I. R. 

 Accademia di Scienze, Lettere ed Arti in Padova : Revista, No. 21-26, 1862, 

 from the Academy. I. R. Istituto Veneto : Atti, T. x., 1864-5, from the 

 Institute. K. K. Geol. Reichsanstalt : Jahresberichte, xv. Bd. No. 2, 

 Wien, 1865, from the Society. K. K. Geograph. Gesellschaft : Mittheil, 

 viii. Jahrg. Heft 1, 1864, from the Society. Hestiae Planetaj Minoris, 

 xlvi.: Elementa Nova, ex ohs. 1857-1864; Redux. F. M. Karlinski, Cra- 

 eoviae, 1865, from the Author. K. K. patr.-okonom. Gesellschaft : Central- 

 blatt Jahrg. xiv. and xv., 1863-4, Prague, from the Society. Deutsche 

 Geol. Gesellschaft : Zeitschrilt, xvii. Band, 1 Heft, Berlin, 1865, from the 

 Society. 



Col. J. F. Meline presented to the Academy vol. xi. of 

 the Pacific R.R. Surveys, 4to, Washington. 



Dr. Engelmann reported his observations on the tempera- 

 ture and humidity of the months of September and October; 

 and also exhibited specimens of the flowers and bulbs of the 

 water-lily (Nymphwa tuberosa), a species recently described 

 by Mr. T. A. Paine of New York. He remarked that several 

 species were found in this vicinity as well as further north. 



November 21, 1865. 

 The President, Dr. Engeliiann, in the chair. 



Six members present. 



Rev. Alexander F. Kemp and Mr. John F. Madison were 

 elected Associate Members. 



