lv CONTENTS. 
XII. Description of an American Spider, constituting anew sub- 
genus, of the tribe Inaquitele of Latreille; by Prof. N. 
M. Hentz, ; ‘ ; , : ‘ ; : 
XIII. Contributions to Electricity and Magnetism—No. IV. On 
Electro-Dynamic Induction; by Prof. Joszerpn Henry, 
LL. D., 
XIV. A Brief Prelieninat Ackiwan of the Teiabaie sie ssid its 
Parasites; by Epwarp C. Herrick, 
XV. Proceedings of Learned Societies : 
I. Association of American Geologists, 
II. Boston Society of Natural History, 
Miscetianres.—Proceedings of the Geological Society, 190.—The 
former existence of Glaciers in Scotland, 191.—Red Color of 
the Salt Marshes of the Mediterranean: New Observations on 
the Infusoria of Rock Salt: Ornithological Gallery of the Brit- 
ish Museum, 193.—Prof. Agassiz and his Works, 194,—Sketch 
of the Geology of North America, 195.—Outlines of Anat- 
omy and Physiology, translated from the French of H. Milne 
Edwards, 199.—Voleanic Phenomena in Hawaii: Manilla 
Hemp, 200.—National Institution at Washington for the pro- 
motion of Science, 203.—Fossil Turtle : Fossil Saurians: Mi- 
croscopical Observations and Microscopes, 205.—Geological 
Drawings, ae etait Moraines, foe : British uAeioria- 
tion—Mr. Murchisoneaiil ¥ to tl : 
Opinions, &c., 207 Dion OF Bait al he Produc- 
tion of ‘cua from Paracyanogen, ee heen Boring 
at Paris, 209.—The Theory of Horticulture: Correspond- 
ing Magnetic Observations, 210.—Fossil Foraminifera in the 
Green Sand of New Jersey, 213.—Discovery in Virginia “4 
the regular Mineral Salt Formation, 214.—Proceedings of th 
Academy of Natural Sciences of Philadelphia, 215.—A Tree. 
tise on the Theory and Practice of Landscape Gardening, 
adapted to North America, 216. 
NUMBER II. 
Art. I. Notice of the late Sheldon Clark, Esq. of Oxford, Connec- 
ticut; by Prof Smuman, . 
iI. First Anniversary Address before the Association of Amer- 
ican Geologists, at their second annual meeting in Phila- 
Page. 
