Apparatus for using Mineral Fusible Cement, 84
Figures illustrating Attraction of Liquids, 98
Crystal of Ferro-Silicate of Manganese, by C. U. Shepard, 142
"Yenite, by C. U. Shepard, 143
Diagram of a model city, 260
Apparatus for Welther's Tube of Safety, by E. Mitchell, 345
Portable Hygrometer, by A. A. Hayes, 352
Figure of Columbite, by C. U. Shepard, 358
Figures of Zircon,"360
Kiln for making Charcoal, 396
Vol. XVIII.–Plates.
1. Figures of the American Locust, (Cicada septendecim,) 47
2. View near the Upper Falls on the Genesee River, 209
3. Map of the Wyoming and Lackawanna Valleys, by George Jones, with a Profile of the Railroad from Carbondale to Lackawaxen River, 308
4, 5. Theory of Springs and Fountains, 273
6, 7, 8. Fossil Organic Remains of the Ferruginous Sand Formation of the U.S., 249, 250
Wood Cuts.
Diagram of Curve of Perpetual Congelation, 9
Wilder's Geometrical Figures, 38, 41
Marine Ventilator, 77
Crystals of Iodine, by W. W. Mather, 85
Fossil Stems, &c., in Mines, 112, 113
Plan of a Frame Bridge, by Lieut. G. W. Long, 125
Crystals of Franconia Epidote, by C. U. Shepard, 130
Crystals of Garnet, 132
Illustration of Decomposition of Water by Galvanic Currents, 200
New Instrument for taking Specific Gravities, 265
Crystals of Tourmaline, by C. U. Shepard, 299, 301
Ideal Section of Strata at Wilkesbarre, in Pennsylvania, 309
Cross Section of Gaylord's mine, West side of the Susquehannah River, 325
View of a Contorted Coal Bed at Pittston, Penn., 326
Vol. XIX.–Plates.
1. Coal Mine at Mauch Chunk, 12
2. Map showing the position of Coal Beds now exposed in the Mauch Chunk Coal Region, 9
View of the Chute at Mauch Chunk, 9
Imaginary Cross Section of the Mountain at the Great Coal Mine, 12
3. Vertical Section of Coal Beds, 12
4. Chemical Laboratory and Lecture Room in the Medical Department of the University of Pennsylvania, 26
5. Sections of the Hartz Mountains, 105
6. Ulmus racemosa, (Thomas,) a new species, 170
Phalæna antiqua; imago, larve, &c., 62
7. Illustrations of Arsenious acid and Arsenic acid, 340
Wood Cuts.