418 
Economical geology of Massachusetts, 
by Prof. Hitchcock, 1. 
Editor on injury of Dr. Hare by fulmina- 
ting silver, 185. 
Elasticity, 190. 
Electricity, currents and sparks of, from 
magnetism, by Prof. Henry 403. 
transference of ponderable 
bodies by, 355. 
Electro-magnetic experiments, by Prof. 
Bache, 409. 
Emanations, odoriferous, 368. 
Encyclopedia Americana, Vol. IX, 189. 
Ether, chloric, S. Guthrie on, 105. 
—_— A. A. Hayes on, 163. 
Sulphuric, manufacture of, 199. 
Evergreens as screens, H. G. Spafford on, 
158. 
Expansion and contraction of building 
stones, Mr. Bartlett on, 136. 
F. 
Feeding of cattle, 202. 
Fermentation, acetic, 195. 
Ferns, East India, 191. 
Fertilization of sulphate of lime, 350. 
Feuchtwanger, Dr., cabinet of minerals 
for sale, 180. 
on plant Guaco, 182. 
Field, M., meteorological observations, 
Fayetteville, Vt., 1881—2, 298. 
Flies, preservative against, 381. 
shower of, 375. 
Forces, central, Prof. Strong on, 132, 342. 
French premiums, 359. : 
Fulminating silver, injury of Dr. Hare by, 
185. 
G. 
Gelatine, nutritious, 197. 
of bones, 369. 
Geologicai text book by Prof. Eaton, 391. 
Geology of Massachusetts, report on, by 
Prof. Hitchcock, 1. 
alluvium, 5; diluvium, 6; tertia- 
ry formations, 7,36; new red sand- 
stone, 8, 35; graywacke, argilla- 
ceous slate, 33; argillaceous and 
flinty slate and graywacke, 9; iron 
ore, 10; varieties of iron, 50; ste- 
atite or soapstone, 31; serpentine, 
29; steatite, serpentine, scapolite 
rock, limestone, 10; limestone, 24; 
marble of Berkshire, 28; quartz 
rock, 11, 22; granular quartz and 
sand for glass, 40; talcose and mi- 
ca slate, 23; chlorite, talcose and 
mica slate, 11; hornblende slate, 
20; gneiss, 18; hornblende slate 
and gneiss, 12; greenstone, 12, 20; 
porphyry, varieties of, 13, 20, 21; 
compact feldspar, 13; sienite and 
INDEX. 
granite, varieties of, 13 to 17; 
porcelain and potter’s clay, 36; 
alum clay, 37; marl and peat, 383; 
buhrstone, 40; Worcester coal, 41; 
plumbago, 46; mineral waters, 47, 
48; non-metallic minerals, 48; 
lead mines, 56; copper, 60; zine 
and manganese, 61; tin, 62; sil- 
ver and gold, 63. q 
Geology of Nova Scotia by Messrs. 
son and Alger, 167. 
Gneiss, 12, 18. 
Goitre, cause of, 355. 
Gold, 63. 
— idle search for, 66. 
——- purple precipitate of, 198. 
Gould, D. rational expressions for sines, 
tan. and secants, 392. ; 
Granite, varieties of, 13 to 17. 
Grapbite, 46. 
Gray wacke, 33. 
Grease of wines, 192. 
Greenstone, 12, 20. 
dyke of, 189. 
Guaco plant, Dr. Feutchwanger on, [82. 
Gum, composition of, 350. 
Gun powder, inflammation of, under wa- 
ter, 354. : 
Guthrie, S., on chloric ether, 105. 
H. 
Hamilton on magnetism, 182. 
Hare, Dr., injury of, by fulminating sil- 
ver, 185. 
Jack- 
process for silicon and boron, 
189. 
Hassler’s logarithmic tables, correction of, 
181. 
Hats, leghorn, materials for, 363. 
mode of dyeing, 383. 
Hayes, A. A., new acid eompound of 
chlorine, carbon and hydrogen, 141. 
on chloric ether, 163. 
Heat from water of bored wells, 373. 
influence of, on magnetism, 361. 
Heating of water, 384. 
Henry, Dr. W., on disinfecting powers 
of increased temperatures, 111. 
Prof. J., on currents and sparks of 
electricity from magnetism, 408. 
disturbance of the earth’s 
magnetism and aurora borealis, 143. 
Hessian fly, Dr. Muse on, 71. 
Hildreth’s, Dr., meteorological observa- 
tions at Marietta, 109. 
Historical and philosophical society of 
Ohio, 181. 
Hitchcock, Prof. E., report on the geolo- 
ogy of Massachusetts, 1. 
Human race, stature of, 357. 
stature, law of increase in, 376. 
Hydraulic voleano, 358. 
pee es combustion of, under pressure, 
352. 
