oo 
REGISTER OF PLATES, MAPS AND OTHER ILLUSTRATIONS. 307 
Vou. XX VIIL.—Puates. 
Page. 
Dana’s System of Crystallographic Symbols, - - 250 
Woop Cuts. 
Plan of improvements at the mouth of the Nile in Egypt, 25 
Diagram illustrating computation of Paths of Meteors, 99 
Plan of region around Schoharie, N. Y., — - - 172 
Hare’s Apparatus for obtaining the Nitrogen from Atmospher- 
ic alr, - - - - - 263 
‘“¢ large Volumescope for analysis of Atmospheric Air, 265 
Conrad’s Diagram illustrating Elevation of the Atlantic Coast, 280 
Clary’s sketch of remarkable Parhelia, Feb. 1835, —- 304. 
Bache’s Apparatus for Radiation, Absorption, &c. of Heat, { Se aos 
*Totten’s Figures of new Shells, a separate leaf, to goat p. 347 
Bell’s improved Air-pump Receiver, - - 304 
Fossil Teeth from Marl Pits of New Jersey,  - - 378 
Vou. XXIX.—PLATEs. 
. Topographical and Geological Map of the Coal Measures and 
of the Muriatiferous and Ferruginous Deposits in the Sec- 
ondary Region of the Valley of the Ohio; with proc of 
the Ohio Valley, - : 1 
. Grotto of Plants, Ohio, - - - - 18 
. Hitchcock’s Figures of Ornithichnites, - - 307 
ee Proportional View of the Ornithichnites, — - 307 
Woop Cuts. 
Hildreth’s Section near the Ohio River, - = 18 
ce *“ of Rock Strata at the Grotto of Plants, 20 
oe ee ie ats Indian ruin, - 23 
cc sf Putnam Hill, - - - 31 
ce gs Limestone Strata on the Clear Fork, 41 
cc sé Rock strata on Will’s Creek, - 44 
ee Topography of Tygart’s Valley, and vicinity, 55 
se Figure of outlines of hills near CIES EES - 59 
os Section of Rock Strata “ - 60 
5 Sectional View of Coal Deposits ean Morgan: 
town and Pittsburgh, - 64 
ss Section of ‘ Coal Hill, ” at Biteberehe Pa, wale 68 
cs ce Rock Strata at Kiskiminitas, - 75 
aC os Wheeling Coal Strata, - - 80 
Madrepore Deposit, on Gauly river, 100 
Layers of Sandstone, - - 102 
