INDEX. 397 



Coal Gas retorts, Plumbago in, 380 



Cog wheels, on the form of the teeth of, 86 



Combustion, new and curious variety of, 387 



Compression of water, instrument for measuring, 1 95 



Condensation of Gases, 352 



Congelation of Mercury, 192 



Conies and Spherics, Prof. Dutton's, 358 



Connecticut, Geology and Mineralogy of the, 1 



■, Tabular arrangement of the rocks of the, 24 



Contagion and I infection, 199 



Conybeare and Phillips, Outlines of the Geology of England and 



Wales, review of, 203 

 Copper of Lake Superior, 43 

 Crank Motion, A. B. Q,uinby on, 3l6 

 Creuzot, Foundary of, 309 

 Cromlechs, 151 



Cryophorus of Dr. Wollaston, 140 

 Curves, Atripsic, 99 



■ , Isosagistic, 90 



Cutbush, J., Localities of minerals at West Point, 57 

 , Remarks on the composition and preparation of 



the Chinese and Brilliant Fires, 118 

 Cyanogen, condensation of, 366 



D. 



Dana, .1. F., on the Theory of the operation of Nitrous Gas in 



Eudiometry. 338 

 Deerfield Mountain, 10 

 Deflagrator, on some improved forms of, 347 

 Desiderata in the Geology of the Connecticut, 22 

 Designs, new mode of printing, 191 

 Deutoxide of Azote in Eudiometry, 338 

 Dewey, Prof. C, additional notice of Argentine, 248 



^ Caricography, 264 



Diluvial, 42, 210, 242 



Doolittle, I., translation of Girard's 2d Memoir on Navigable 



Canals, 288 

 Drought in Sicily, 186 

 Dutton, Prof., Conies and Spherics, 358 

 Dye, superior green, 196 

 Dying, new work on, 368 



E. 



East and West Rock, 2 



Editor, remarks on the Cryophorus of Dr. Wollaston, 140 



— , on the cutting of steel by soft iron, 342 



