ree of California, 443.— ri 
Anijmaliam Dien asieena ete., 44 shih vires pour servir a ¥ atars Naturelle ad 
Mexique, des Antilles et des RES par Henri DE Saussure, 445.—Observation 
on the Genus Univ, by Isaac Lea: Catalogue of the Described sae the Un 
ted States : Catalogue of the PR Diptera of North Ameri 
oe 
neous Scientific ee ee Appendix to the Article on Fluctuatic 
@ ter Level of the Lakes, by C. WatrtLesry, 447.—Report on the History : 
of the American Const ue to 1858, 448.—Note on the Height of the Atmosphe 
recent E slieuocs 452. 
Index, 453. 
ERRATUM. 
Vol. XXVI, p. 305, in the title to Dr. Hayes’s article, dele “wii 
ei, 
ADDENDUM. if: 
To bottom of page 243, after “Delphi Slate” add “or Black a ala 
equivalent of t the Genesee Slate or Marcellus shale of New York” ee if 
