No. 8.] BIBLIOGRAPHY OF CONNECTICUT GEOLOGY. I7 



36. Dana, J. D. 



The character of trap near New Haven. 

 Am. Jour. Sci., (3) iv, 22,7, 1872. 



Essential identity of the New Haven trap and Palisade (New Jersey) 

 trap; iron in them is magnetic. 



37. Dana, J. D, 



On the quartzite, limestone and associated rocks of the 

 vicinity of Great Barrington, Berkshire county, Massa- 

 chusetts. 



Am. Jour. Sci., (3) iv., z^'2'-ZT^, 450-4S3> map, 1872; 

 V, 47-53, 84-91, 1873; vi, 257-278, 1873. 



Description and general relations of the mica schist, gneiss, quartzite, 

 and limestone of Canaan, South Canaan, and Falls Village; mention of 

 the chlorijtic mica slate of the New Haven region, and the Taconic 

 slates of Salisbury and Mount Washington. 



38. Dana, J. D. 



On the geology of the New Haven Region, with special 

 reference to the origin of some of its topographic fea- 

 tures. 



Connecticut Acad. Arts Sci., Trans., ii, 45-112, map, 1873. 



Description of the main geological features of the region. Geological 

 events previous to the Glacial period, forming of sandstone and trap 

 areas, subsequent elevation, erosion, etc. The Glacial period — con- 

 ditions and results; events of post-Glacial time; various changes in 

 level of the area; structure of the New Haven plain. 



39. Dana, J. D. 



On the Glacial and Champlain eras in New England. 

 Am. Jour. Sci., (3) v, 198-21 1, 217-219, 1873. 



Summary of the facts, theories, and conclusions concerning the 

 Glacial history of New England. 



40. Dana, J. D. 



On staurolite crystals and Green mountain gneisses of 

 the Silurian age. 



'Am. Assoc. Adv. Sci., Proc, xxii, pt. ii, 25-27, 1873; Am. 

 Nat., vii, 658-670, 1S73; Can. Nat. (new ser.), vii, 163, 1875. 



Mention of staurolite crystals, associated with garnet and their oc- 

 currence in mica schist which overlies the Stockbridge limestone at Falls 

 Village. Facts drawn from the alternation of quartzite, limestone, gneiss 

 or mica schist, showing that all old-looking Green mountain gneisses 

 are not pre-Silurian, and that the presence of staurolite is no evidence 

 of a pre-Silurian age. 



41. Dana, J. D. 



On southern New England during the melting of the 

 great glacier. 



Am. Jour. Sci., (3) x, 168-183, 2S0-282, 353-357, 409-438, 

 497-508, 1875; xi, 178-180, 1876; xii, 125-128, 1876. 

 2 



=?- 



