62 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



264. Silliman, B. 



Mineralogical and geological observations on New Ha- 

 ven and its vicinity. 



Am. Jour. Sci., (i) i, 55-56, 1819. 



An account of native copper found in the drift at Wallingford. 



265. Silliman, B. 



Sketches of a tour in the counties of New Haven and 

 Litchfield in Connecticut, with notices of the geology, 

 mineralogy, and scenery. 



Am. Jour. Sci., (i) ii, 201-235, 1820. 



Conversational description, in diary form, of a tour through western 

 Connecticut, touching at New Haven, Watertown, Goshen, Salisbury, 

 Kent, New Preston, New Milford, Woodbury; mentions Secondary green- 

 stone ranges. Primitive slate rocks, gneiss, granite, limestone, and 

 iron ores; describes the scenery as well as various manufactories, etc. 



266. Silliman, B. 



Remarks made on a short tour between Hartford and 

 Quebec in the autumn of 1819. 407 pp., 12°, New Haven, 

 1820; 2d ed., 443 pp., 9 pis.. New Haven, 1824. 



Describes tour from Hartford over Talcott mountain through Canton,. 

 New Hartford, and thence up the Farmington river to Massachusetts. 

 The central area of Secondary sandstone and trap or greenstone is- 

 described. " The ridges of greenstone repose almost universally upon 

 sandstone." The topography of the trap ridges and the talus slopes is 

 explained. " It is amusing to observe how immediately the materials- 

 of the fences and the buildings, so far as they are constructed of stone, 

 change as soon as the geology of the country changes." 



The western crystallines are described as gneiss in " high, rounded. 

 Primitive hills." 



267. Silliman, B. 



Remarks on red sandstone of the Connecticut region. 



Am. Jour. Sci., (i) iii, 221, 222, 1821. 



Mentions general relation of " trap-formation " of New England. 

 Ridges of columnar greenstone trap reposing on red sandstone rock, 

 beneath which lie slaty bituminous rocks; in the latter were found, at 

 Westfield, fish impressions and copper minerals. 



268. Silliman, B. 



Notice of " Geological essays, or an inquiry into some 

 of the geological phenomena, to be found in various parts 

 of America and elsewhere — By Horace H. Hayden, Esq., 

 member of the American Geological Society." 



Am. Jour. Sci., (i) iii, 47-57, 1821. 



Discussion of Mr. Hayden's theory that the alluvial region skirting 

 the Atlantic Ocean is the result of the operation of currents (whose 

 cause is the deluge of Noah) that flowed from northeast to south- 



