On Geology, by Smith (S.). Stevens, Julien. Ox Paleontology, by Cooper ( W.), 

 Cozzens, DeKay, Hitchcock (C. H), Mitchell, Renwiok, Redfleld. On Mineralogy, 

 by Dana, Delafleld, James, Bailey (S. C. H.). Joy, Renwick, Torrey, Totten, Thomson. 

 On Botany, by Torrey, Cooper (\Vm.), Gray, Darlington, Harley, Dana, LeConte, 

 Madianna, DeSchweinitz, Groom. On Mammalia, by Cooper (Wm.), Cozzens, DeKay, 

 King, Ludlow, LeConte. On Birds, by Audubon, Bonaparte, DeWitt Clinton, Jones, 

 Gundlach, Ward, Baird, Bell, Giraud, Lawrence. On Reptiles, by LeConte, Smith, 

 Troost. On Fishes, by DeWitt Clinton, Mitchell, DeKay, Poey, Brevoort, Suckley, 

 Tellkampf, Gill. On Insects, by LeConte (J.), LeConte (J. C), Greene, Grote, Robin- 

 son, Hill, Matthews. On Crustaceans, by LeConte, Gill, Stirapson. On Annelides, 

 by Agassiz. On Mollusks, by Barnes, DeKay, Jay, Redfleld, Fairbank, Gill, Gulick, 

 Haines, Newcomb, Cooper (J. G.), Shuttleworth, Adams, Cliitty, Prime, Anthony, 

 Bland, Rowell, Smith (S.), Hubbard, Krebs, Morse. On Radiates, by Agassiz, Ed- 

 wards. On Microscopy, by Edwards. On Meteorology, by Morris. 



The following is a list of the contents in full of Volume IX, with 2 

 plates and 426 pages, 1868 to 1870. 



By Alexander Agassiz. Note on Lov^n's Article on "Leskia mirabilis, Gray." 



By W. G. BiNNEY and Thomas Bland. Notes on Lingual Dentition of Mollusca. 



By Thomas Bland. Notes on certain Terrestrial Mollusca, with Descriptions of New 

 Species; Additional Notes on the Geographical Distribution of Land Shells in 

 the West Indies. 



By H. C. Bolton. Index to the Literature of Uranium. 



By A. D. Brown. Note on Bulimus ciliatus, Gould. 



By W. H. Dall. On the Genus Pompholyx and its Allies, with a revision of the Lim- 

 naeidse of Authors (Plate II). 



By A. M. Edwards. Results of a Microscopical Examination of Specimens of Sand 

 obtained from an Artesian Well. 



By H. Endemann and O. Loew. On the Earth contained in the Zircons of North 

 Carolina. 



By George N. Lawrence. A Catalogue of the Birds found in Costa Rica; List of 

 a Collection of Birds from Northei-n Yucatan; Catalogue of Birds from Puna 

 Island, Gulf of Guayaquil, in the Museum of the Smithsonian Institution, col- 

 lected by .J. F. Reeve; Characters of some new South American Birds, with 

 Notes on other rare or little known Species. 



By O. Loew. On a New Product obtained by the Decomposition of Trichlormethyl- 

 sulphonbromide; On the Number of Isomeric Bodies. 



By J. S. Newberry. Notes on the Later Extinct Floras of North America, with Des- 

 criptions of some New Species of Fossil Plants from the Cretaceous and Tertiary 

 Strata ; On the Surface Geology of the Basin of the Great Lakes, and the Valley 

 of the Mississippi. 



By Felipe Poev. Review of the Fish of Cuba belonging to the Genus Trisotropis, 

 with an Introductory Note by J. Carson Brevoort; Note on the Hermaphroditism 

 of Fish; New Species of Cuban Fish. 



By Temple Prime. On the names applied to Pisidium, a genus of Corbiculada; ; List 

 of the Species of Mollusca found in the vicinity of North Conway, New Hamp- 

 shire; Notes on Species of the Family CorbiculadaB, with Figures. 



By Coleman T. Robin'SON. Lepidopterological Miscellanies (Plate I). 



By Paul Schweitzer. On Tribasic Phosphoric Acid; its history, its modes of sep- 

 aration from sesquioxyds, principally from Sesquioxyd of Iron, and its estimation. 



