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344 REGISTER OF PLATES, MAPS AND OTHER ILLUSTRATIONS. 
Vou. XLI._—Ptates. 
Page 
1. Portrait of Sheldon Clark, (Frontispiece,) - 217 
2. Taylor’s View of Geological Model of Southern Coal Field 
of Pennsylvania, - - rate Z 80 
3, 4. Bailey’s Figures of American Bacilarie, - 284, 304 
5. Shells from the Secondary and Tertiary Soe (T. A. 
Conrad,)_ - - : - - 344 
Woop Cuts. 
W.C. Redfield’s Sketch of the Prostrations on a section of 
the track of the New Brunswick Tornado, June 19, 1835, 79 
Illustrations to pony: poree on Electro-Dynamic Induc- 
tion, - - - 120, 137, 141, 146 
Apparatus for preparing Manilla Hemp, - - 201 
Polythalamia from the Upper Mississippi, &c., - 401 
Vou. XLII.—Puates. 
1, 2. Bailey’s Figures of American Bacillaria, - 88, 104 
3. H.C. Lea’s Figures of eight new species of Shells, = - 106 
4, 5. Leedom’s Tellurium, an Astronomical Machine, - 338 
6. Isotelus megistos, - : : 366 
Woop Cuts. 
Apparatus for detecting Arsenic, ad, TO 
Redfield’s Charts of the Storm of Dec. 15, 1839, - 116, 117 
Fossil Bones from Oregon Territory,  - - - 137, 1389 
Combustion by means of Wood Ashes, - - 167 
Furnaces, &c., for smelting Lead, - - 170, 171, 173 
Microscopic views of powder which fell on deck of a ves- 
sel, - - - - - - 196, 197 
Alabaster Concretion from Mammoth Cave, Kentucky, - 207 
Spark Extinguisher, - - - - 209 
Sketch of Glaciers, Moraines, &c., - o 347, 354, 355 
Sketches of the Alps and the Jura, - 359, 360 
Crown of a Fossil Molar Tooth found in Opelousas La., - 390 
Vou. XLIT1.—Puartes. 
1. Slab of Limestone with Footprints and Scroll found in bed of 
Mississippi at St. Louis, in 1819, - = 14 
2. Dewey’s Figures of Carices, Tab. Ce, figs. 94-97, : 90 
3. Bones of two new Fossil Mammals from Georgia, United 
States, (1) Sus americana, Harl., - - 143 
(2) Chelonia Couperi, Harl., 2 - 144 
