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Holothuria heros, Agassiz, 269.
HORSFORD, PROFESSOR. On the chemical action of water on lead
and other pipes, 62. On the explosions of burning-fluids, 178,
311. On the spheroidal state of water, 180. On the spheroidal
state of bodies, 239. On the permeability of metals to mercury,
295.

Hydraulics, new experiment in, 265.

Ice, apparatus for making, 300.

I.

Ice, columnar crystallization of, 221.
Icilidæ, fam., 219.

Icilius, gen., 220.

ovalis, D., 220.

JACKSON, C. T. On tellurium in gold ore, 2. On manganese in the
water of streams, &c., 111. On coast marks, 221. On apatite,
242. Temperature at which charcoal takes fire, 256. Analysis of
phosphate of lime, 261. On the explosion of burning-fluids, 316.
On the use of alcohol, 322.

JENKS, WILLIAM. On an inscription on a rock in the island of Mana-
nas, 267.

Journal, Astronomical, 163.

Von Boguslauski, Professor, 157.

Wayland, Francis, 155.

Whewell, William, 152.

Winthrop, R. C., 156, 227, 228, 229, 272, 273.
Yandell, L. P., 151.

Zantedeschi, F. C., 229.

Library of Dr. Bowditch, 182.

Light, direct, in microscopical researches, 326.

Lime, phosphate of, 242.

Lime, phosphate of, analysis of, 261.

LOVERING, JOSEPH. On the causes of the differences in the strength
of ordinary magnets and electro-magnets, of the same shape and
size, 105. On the law of continuity, 120. On the aneroid ba-
rometer, 186. Electrical experiment, 251. On the connection of
electricity with tornadoes, 293. On coronæ and halos, 302.

Lunar tables, new, 271.

Braziliensis, D., 208.

Lysianassinæ, fam., 208.

M.

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