Plans of Long Lake and Mud Lake, in Vermont, 39
R. Hare's Apparatus for showing Specific Gravity, 122, 123, 124
"Sliding Rod Eudiometer, 125
"Apparatus for finding Specific Gravity, 127
"Chyometer, 128
"Litrameter, 133
"Hydrostatic Blowpipe, 137
"Self-regulating Reservoir, 140
""" 142
"Hydro-oxygen Blowpipe, 143
Figures of the Divining Rod, 202, 203
Sketches of Topography, S. side Ontario Valley, N. Y., 214, 215
Section of a Valley, and Imaginary Section between Lake Erie and Lewiston, 216, 217
Figures of Crystals of Humboldtilite, 252
""Davyne, 257
""Cavolinite and Christianite, 260, 262
""Biotina, 265, 266
Solar Halos, Aug. 1825, 326
""Sept. 1816, 328
""""333
Diagram illustrating Crank Motion, 338
Vol. XII.–Plates.
1. Plans of Engines of Steamboat Babcock, by Patten, 115
2. Paddle Fish or Spoonbill Sturgeon of the Mississippi, 201
Figures of Tortoises, 286, 287
3. Fluids in the Cavities of Minerals, 214
4. Geological Map of Lead Mines and Veins of Hampshire Co., Mass., by Alanson Nash, 238
5. Dewey's Figures of Carices. Tab. P, figs. 50-52, xi, 150, 162; xii, 296
Wood Cuts.
R. Hare's Piston Valve Volumeter, 36
"Simple Valve Volumeter, 38
"Sliding Rod Gas Measure, 39
"Barometer Gage Eudiometer, 41
"Improved Mercurial Sliding Rod Hydro-Oxygen Eudiometer, 45
"Carbonicometer, 48
Quinby's Diagrams, 127, 345
Crystals of Topaz, from Huntington, Ct., by C. U. Shepard, 158
Crystal of Cyanite, 159
"of Sillimanite, 160
Granite and Mica Slate, nests of, Hampshire Co., Mass., 242
Granite and other Rocks,"242
Feldspar Veins,"244
Section of Strata,"248
Argentine Cliff and Galena Vein, &c., " 257
Granite Veins, " 263, 264, 265
Vol. XIII.–Plates.
1. Doolittle's Hydrostat for Steam Engine Boilers, 64
Perkins's Steam Engine, 59
2. Dog Trains of the Northwest, 391
Wood Cuts.