The American Journal of Science and Arts, by James I). Dana &? — New lía- 

 ven. Cuadernos en 4<?— 1873 núms. 36, 37.— 1874, núms. 38, 40, 41, 42, 44, 

 46, 47 y 48.— 1875, núms. 49, 50, 51, 52, 53, 55, G0 y 61.— 1876, núms. 64 y 68. 

 Del "American Journal" los cuadernos siguientes, que contienen solo escritos del 

 prof. J. Dana. 



— I. On parallel of tbe classes of vertebrates, and on some characteristics of the 

 reptilian birds. II. Tbe clasification of animáis based on the principie of the 

 cephalization. 1863. 

 — I. The clasification of the. animáis based on the principie of cephalization. — 

 No III. Clasification of berbivores. II. Note on the position of amphibian 

 among tbe classes of vertebrates. 1864. 

 — Tbe clasification of animáis based on the principie of cephalization. On fossil, 



insects from tbe carboniferous formation on Illinois. 

 — Cephalization u? IV. Explanations drawn aut by tbe statements of an obje- 



tor. 1866. 

 — Oa tbe glacial and Champlain eras in New England. 1873. 

 — On tbe origin of montains. 1873. 



— On rocks of the Heldelbcrg era in the valley of the Conneeticut, 

 — On the Quarsite limenstone an a d rocks of tbe vicinity great Ha- 



rrington &, 1873. 

 — One some resuíts of the Earts contraction from colling. 1873. 

 The Scientific education of mecbanics and artizan s, by Andrew P. Peabody 



Washington, 1873. Un vol. en 4? 

 First, second and tbird animal report of tbe U. S. Geological Survey of tbe ter- 

 ritories for the years 1867, 1868 and 1869, under the Department of the Interior. 

 "Washington 1873. Un vol. en 4? 



Sixth animal report of the U. S. Geological. Survey of the territories, by F. V. 

 Hayden. "Washington,. 1873. Un cuaderno en 4? 



Bulletin of tbe U. S. Geologic. and Geograph. Survey of the territories. Washing- 

 on, 1874. Un cuaderno en 4.° 



Geological Survey of tbe territories. Contributions to tbe fossil llora of tbe Wes- 

 tern territories. Part. I. The Cretaceous Flora, by Leo Lesqnercux. Washington, 

 ti 874. Un vol. en folio. 



ií Mines and Mining in tbe States and Territories west of the Rock 



Mountains, being the sixth animal report of líossitcr W. Raymond. Washington, 



Un vol. en 4? 



•moirs of the Boston Society oí N. History. vol. II. Part. III. Numb. IV. The 



les of tlíe Lepidopterous. Genus Pampbila, by S. II. Sccuder. Boston, 1874. 



Un cintílenlo en folio. 



Animal report of the U. S. Geoíogic. and Geograph. Survey of the territories, 

 lie colorado, by F. V. Hayden. Wuashington, 1874-76, dos vol. en 4? 



(Continuará.) 



