176 TRANS. OF THE ACAD. OF SCIENCE. 



March 17, 1862. 



The President, Dr. Engelmann, in the chair. 



Five members present. 



The following letters were received: 



From Prof. Jos. Henry, Sec'y Smithson. Inst., Feb. 20 & 27, 1862, con- 

 cerning exchanges ; A. F. Bandelier, Jr., Highland, III., containing me- 

 teorological observations at Highland ; Societe - Roy. ties Sciences, Upsal, 

 Sept. 2 & 9, 1861 ; K. K. Akad. der Wissensch., Wien, Oct. 4 & 28, 1861 ; 

 Roy. Danisli Soc. of Sciences, Copenhagen, July 1,1861 ; Naturw. Verein 

 des Hartzes, Blankenburg, Oct. 23, 1861; Dr. Robert Peter, Lexington, 

 Ky., March 8, 1861 ; A. F. Bandelier, Jr., Highland, 111., March 7, 1862, 

 containing meteorological observations for Feb. 1862; Reale Accadeima 

 delle Scienze, Naples, Ap. 16, I860, & Mar. 13, 1861 ; Nattirh. Gesellsch., 

 Number g, Feb. 25, 1861 ; Naturf. Geseilsch., Altenbnrg, Sept. 24, 1861: 

 Naturf. Gesellsch, Danzig, 1861 ; Verein fur Naturk. im Herzogthum Nas- 

 sau, Wiesbaden, Oct 1,1861; K. K geograph Gesellsch., Wien, Oct. 20, 

 1861 ; Director W. Haidinger, Wien, Sept. 23, 1861 ; K. bayer. Akad. der 

 Wissensch., Miinchen, Dec. 2,1861 ; L. Sheffler, Oct. 23, 1861. 

 Additions to the library were received as follows : 

 Wochenschrift des Verein3 z. Beford. des Gartenbaues, No. 7--49, 1861, 

 Berlin, from the Society; Nova Acta R. Soc. Scientiarum, Upsal, Ser. 3, 

 Vol. III., 1861 ; Arskrift, II., 1861, from the Society. Sitzungsb. d. math.- 

 naturw. Classe. der K. K. Akad. der Wissensch.. Wien. 1860, No. 29 ; 1861, 

 I. Abth. 3-8, II. Abth, 3-7, from the Academy. 2r Berichtdes Offenbacher 

 Verein-* fiir Naturk. 1860-1, from the Society. K. danske Videnskabernes 

 Selskab, Obersigt, 1860 ; Qnestiones, 1861. from the Society. Aus der Hei- 

 math, von Dr. E. A. Rossmassler, No. 26-49. 1861, Leipzig, from the Edi- 

 tor. Reportof Geol. Survey of Kentucky, Vols. I. --III., by D. D. Owen, 

 1856-7,— .Maps & Plates, 1857; Geol. Reconnoissance of State of Indiana, 

 1837, by D. D. Owen, from Dr. Robert Pehr. Jour. Acad. Nat. Sciences, 

 Philad., Vol. V., Pt. 1. 1862; Proc.of same, Dec. 1861, from the Academy. 

 Canadian Nat. & Geolog. & Proc. Nat. Hist. Soc, Montreal, Vol. VII., 

 No. 1, 1862, from the Society. 



Papers were read by Dr. George Engelmann as follows : 

 "On the difference of Temperature, Evaporation and Rela- 

 tive Humidity of the Atmosphere in the City of St. Louis and 

 surrounding country." 



"On Pinus aristata, a new species of Pine discovered by 

 Dr. C. C. Parry in the Alpine Regions of the Rocky Moun- 

 tains." 



"On some new species of Gentiana from the Alpine Re- 

 gions of the Rocky Mountains." 



"Additions to the Cactus Flora of the Territory of the 

 United States." 



These papers were referred to the Publication Committee. 



Mr. Holmes culled the attention of members to a very 

 interesting article in the " Sitzungsbericht" of the Imperial 

 Academy of Sciences of Vienna, for March, 1861 (Bd. XLIII., 

 Heft 3, pp. 389-426), by Prof. W, Haidinger, on the Nature 

 of Meteorites, their Origin and Composition, (fiber dit Natur 

 der Meteoriten in Hirer Zusammenst tzung and Erscht inung), 

 in which the learned author considers the bodies, first, in 



