222 



TRANS. OF THE ACAD. OF SCIENCE. 



Contributions to Paleontology : Descriptions of New Species of Fos- 

 sils from the Upper Helderberg, Hamilton, and Chemung Groups, Alba- 

 113', 1862, by James Hall,— Observations upon New Fossils from the rocks 

 of the Hudson River Group, of Ohio, and the Western States, with De- 

 scriptions, by James Hall,— //om the Author; On the Higher Subdivisions 

 in the Classification of Mammals, by James D. Dana, New Haven, from 

 the Author. 



Dr. Engelmann made some remarks on the Linntean genus 

 Pinus, and its subdivisions, the Firs, Spruces, Hemlocks, 

 Larches, Cedars, and Pines proper. 



John M. Bigelow, M.D., of Detroit, Mich., was elected a 

 Corresponding Member. 



March 2, 18 03. 

 The President, Dr. Engelmann, in the chair. 



Ten members present. 



The Corresponding Secretary laid upon the table the Bul- 

 letin de la Soc. Imp. zoologique d'Acclimatation, Paris, No. 

 12, Dec, 1862, a donation from the Society. 



Mr. G. C. Broadhead presented sundry concretions from 

 the Quartenary deposits, near St. Charles, Mo. 



Dr. Engelmann exhibited a series of beautifully executed pencil draw- 

 ings, by Mr. Paulus Roetter, representing several species of Coniferee dis- 

 covered by Dr. Wislizenus in the mountains of Chihuahua in 1846, and 

 by Dr. Parry, last year, in the region of Pike's Peak ; and, also, a Dia- 

 gram of the stage of the Mississippi River at St. Louis during the year 

 1862, constructed from the daily observations made by T. J. Homer, Esq., 

 City Engineer. 



Dr. Engelmann stated that the past winter had been one of the warm- 

 est and most humid experienced at St. Louis in the last twenty -five years, 

 only two warmer and two more humid winters having been observed in 

 that period. He gave the following data* : 



December, 1862 



January, 1863 



February, " 



Winter of 1862-3 



M< :ni of Winter in 25 yrs 



Total 

 Precip. 



6.38 

 4.11 

 3.99 

 14.48 

 7.69 



* The last two winters have not changed these results (March, 1865). 



