ABBOTT (R.) on the variation of a
triple integral, 42.
Acaroid resin, 163.

Achromatic eye-pieces, single, con-
struction and use of, 195.
Actinograph, or self-registering pho-
tometer, for meteorological pur-
poses, 209.
Actinometers, photometers, &c., in-
competent to give absolute measures
of either heat or light, 389.
Addison (W.) on the distribution of
the air-passages, and of the modes
of formation of the air-cells of the
lungs, 381.
Aerolite, 134.

Afzelius (Dr. Adam), notice of the
late, 18.

Ainsworth (W.), geological and bo-
tanical notes on Northern Syria, 57.
Air, inductive capacity of, 41.
Airy (G. B.), experiments on iron-
built ships, for the purpose of dis-
covering a correction for the devi
ation of the compass produced by
the iron of ships, 140, 141.

on the theoretical explanation of
an apparently new polarity of light,
239, 247.

on the rise and fall of the tides
in the Thames, 330.

on the meteorological instru-
ments at the Royal Observatory,
Greenwich, with which the meteo-
rological observations have been
made from November 1840 to July
1841, 330.

on the laws of individual tides at
Southampton and Ipswich, 445.
Albert of Saxe-Coburg and Gotha
(H.R.H. Prince), the address of
congratulation on the occasion of
his Royal Highness's marriage with
Her Majesty the Queen, 204; the
answer of His Royal Highness,
205.

address of congratulation on the
occasion of the late traitorous attack
of an assassin, 237.

address of congratulation on

the birth of the Princess Royal,
281.

Albert of Saxe-Coburg and Gotha
(H.R.H. Prince), address of con-
gratulation on the birth of the Heir
to the Throne, 332.

address of congratulation on the
providential escape of Her Majesty
and His Royal Highness from the
attack of an assassin, 392.
Algebraic series, on the summation
of, 456.

Alderson (Dr.) on the difference of
colour in different parts of the bodies
of animals, 165.

Alison (Rev. A), notice of the late, 176.
Alkaline and earthy bodies in plants,
on the formation of, 131.
Allenheads, meteorological journal for
1841 kept at, 221, 297, 371.
Alten, meteorological observations
made at, 195, 229.

Amarythrine, chemical examination
of, 233.

America, magnetical observations
made on the north coast of, 4.

-, magnetic observations on the
west coast of, and the adjacent
islands, 288, 465.

Ammonia, resin of, 219.

its action on biniodide and per-
chloride of platinum, 380.
Animal tissues, the non-vascularity
and peculiar uniform mode of orga-
nization and nutrition of, 308.

tissues, on the supposed deve-
lopement of from cells, 468.
Animalcule, parasitic, of the human
skin, a newly discovered, 455.
Animals, on the difference of colour in
different parts of the bodies of, 165.

on the relation between the
respiratory organs of, and the pre-
servation of independent tempera-
tures, 474.

Anniversary Meetings: Nov. 30, 1837,
4; Nov. 30, 1838, 84; Nov. 30,
1839, 167; Nov. 30, 1840, 250;
Nov. 30, 1841, 331; Nov. 30, 1842,
399.

Antarctic scientific Expedition, pro-
posed by the British Association
and the Royal Society to Her Ma-
jesty's Government, 169, 252, 401.
hints and instructions drawn up
for the guidance of the, 169, 253.

seas, a vessel sent out by Mr.
Enderby for the purposes of disco-
very in the, 253.

Arachnida, on the circulation of the
blood in the, 458.

Archil, chemical history of, 233, 337.
Ardwick, description of the observa-
tory at, 371.

Arseniates, on the, 162.

Assafoetida, resin of, 219, 241.

Astacus marinus, on the

organ of hear-

ing of, 472.
Astronomical refractions, on, 60,

clock, description of an, 221.
Atkinson (J.) on a rain table and map,

221.

Baily (F.), description of a new baro-
meter fixed up in the apartment of
the Royal Society, with an account
of the mode now adopted for cor-
recting the observed height of the
mercury, 1.
Bakerian Lecture: Mr. Ivory on the
theory of astronomical refractions, 60.

Mr. W. Snow Harris on the
elementary laws of electricity, 156.

Mr. Airy on the theoretical ex-
planation of an apparently new po-
larity of light, 239.

Mr. G. Newport on the organs
of reproduction, and on the develop-
ment of the Myriapoda, 326.

Prof. J. D. Forbes on the trans-

-, hourly observations at sea of
the, 239.

on

variations of the mean height
of, 211, 226.

on a cycle of eighteen years in
the mean annual height of the, 292.
on a remarkable depression of
the, 292.

on an irregularity in the height
of the, 295.

and thermometer, Coggan's, 72.
Barometrical observations taken at
Naples, 303.

observations at Yarmouth, 369.
observations, showing the effect
of the direction of the wind on the
difference between distant barome-
ters, 386,

Baroscope, hydropneumatic, descrip-
tion of a, 126.

Barrow (Sir J.), magnetic observa-
tions, 220.

Barry (Dr. M.), researches in embry-
ology, 73, 136, 222, 279.

a Royal medal awarded to, 172.
on the corpuscles of the blood,
234, 283, 323, 462.

a contribution to the physiology
of cells, 222, 279.

on the discovery of the germinal
spot in the mammiferous ovum, 279.
on the chorda dorsalis, 282.
on fibre, 362, 384, 431.

-, spermatozoa observed within the
mammiferous ovum, 432.

on fossiparous generation, 441.
note on the observations of T.
W. Jones, Esq., 462.

Batten (Rev. Dr. J. H.), notice of the
late, 15.

Bauer (F.), biographical notice of, 342.
Bdellium, resin of, 241.

Becquerel (M.), the Copley medal

awarded to, for his memoirs on elec-
tricity, 22.

Belcher (Capt.), magnetic observa-
tions on the west coast of America
and the adjacent islands, 288, 465.
boring register, Bow Island,
South Pacific, 399.

remarks upon the tides at Ta-
hiti, 440.

Bell (A.) on rotatory motion, 66.
Bell (Sir C.) on the nervous system,
217, 218.

biographical notice of, 402.
Benzoin, resin of, 241; action of caus-
tic lime on, 242; action of caustic
potash on, 242; action of oxide of
lead on, 242.
Berengela resin, 219.
Bibasic salts, 102.

Bicyanide, new equi-atomic compound
of, with binoxide of mercury, 135.
Binocular vision, on, 76.
Binoxide of mercury, new equi-atomic
compound of bicyanide with, 135.
Biographical notices of deceased Fel-
lows, 10, 92, 173, 256, 341, 402.
Birds of Kerguelen's Land, 298.

collected between the Cape of
Good Hope and Van Diemen's
Land, 305.

Blair (D.), hourly meteorological ob-
servations taken at Georgetown,
British Guiana, 467.

Blake (J.) on the mode of operation
of poisons, 155.

on the action of certain inorganic
compounds when introduced into
the blood, 284, 285.

Blindness, congenital, on the cure of,
303.

Blood, examination of the, in the dif-
ferent forms of fever accompanying
inflammation and suppuration, 67.
-, experiments on the, in connex-
ion with the theory of respiration, 78.
"" on the corpuscles of the, 234,
283, 323, 431, 462.

-, progressive division of the blood-
disc into globules, 234; rapid and
incessant changes in the form of
altered blood-corpuscles, 234; the
chorion formed of cells derived from
corpuscles of the blood, 235; mus-
cular fibre formed of cells derived
from corpuscles of the blood, 235;
state of the blood-corpuscles during
vital turgescence of the vessels, 235.

Blood, on the motion of the, 140.

action of certain inorganic com-
pounds when introduced into the
285.

facts observed in the coagulation
of the, 384.

on the circulation of the, in the
Myriapoda and the Macrourous
Arachnida, 460.

Blood-corpuscles of certain species of
the genus Cervus, on, 199.

observations on, particularly
with reference to the opinions of
Dr. Barry, 431.

note on the observations of T.
W. Jones, Esq., on the, 462.
Blood-particles of the Ornithorhyn-
chus hystrix, on the form of, 232.
Blumenbach (J. F.), biographical no-
tice of, 265.

Bone, normal and adventitious, struc-
ture of, 198.

Booth (J.) on the rectification and
quadrature of the spherical ellipse,
387.

Boring register, Bow Island, South
Pacific, 399.

Bowditch (Dr. N.), biographical no-
tice of, 95.

Bowerbank (J. S.) on the organic tis-
sues in the bony structure of the
Corallidæ, 382, 383.

Bowman (W.) on the minute structure
and movements of voluntary mus-
cles, 244, 301.

on the structure and use of the
Malpighian bodies of the kidney,
374, 375.

-, a Royal medal awarded to, 422.
Bowring (J. C.) on a new method of

determining the longitude, 52.

Boys (Rev. T.) on the steam-wave, 372.
Brain, on the decussation of fibres at
the junction of the medulla spinalis
with the medulla oblongata, 71.
Brazil, magnetical observations made
on the coast of, 4.

Brewster (Sir David) on the colours of
mixed plates, 33.

on a remarkable property of the
diamond, 291.

on the phenomena of thin plates
of solid and fluid substances exposed
to polarized light, 302.
Bristol, tide observations at, 73, 242.
Broughton (J.D.), notice of the late, 17.
Brown (R.), a Royal medal awarded

paper, preparation of, 312; its
use, 313; fixing process, 314.
Calorific rays in the solar spectrum, on
the distribution of the, 209.
Calorific spectrum, account of a pro-
cess for rendering it visible, 209.
Cambium, on the descent of the, in
plants, 449.

Cape of Good Hope, meteorological
observations at, 374, 380.

Cape Palmas, daily thermometrical
observations at, 331.
Carbon and nitrogen, compound bodies,
472.
Carlini (Prof.), magnetic term obser-
vations made at Milan, 280, 311.

variation of the magnetic de-
clination, horizontal intensity and
inclination at Milan, 282, 294, 298,
329, 362, 371, 435, 456, 462.

observations on magnetic direc-
tion and intensity made at Milan,
295, 298.

Carlisle (Sir A.), notice of the late, 260.
Carpenter (Dr. W. B.) on the minute

structure of the skeletons of the In-
vertebrata, 435, 466, 467.
Carson (Dr. J.) on the motion of the
blood, 140.

Cartilage, articular, the non-vascu-
larity and peculiar uniform mode of
organization and nutrition of, 308.

fibro-, on the structure of, 309.

Cartilage, the elements of, compared
with corpuscles of the blood, 324.
Cassini's (Dr.) theory of the astro-
nomical refractions, 60.

Catton (Rev. Thomas), notice of the
late, 94.

Cellular tissue, the elements of, com-
pared with corpuscles of the blood,
324.

Cells, on the physiology of, 222, 279.
Cerebellum, an appendage to the brain
rather than to the medulla oblon-
gata and spinal nerves, 473.
Cervus, genus, on the blood-corpuscles
of the, 199.

Chantrey (Sir F.), notice of the late,341.
Chemical action of the rays of the solar
spectrum on preparations of silver,
&c., 205.

action, the source of power in the
voltaic pile, 200, 213; sufficiency
of, to produce voltaic currents, 215.
constitution of bodies which
undergo vinous fermentation, 149.
equivalents of certain bodies, on
the, 123.

history of archil and litmus, 233,

337.

history of the compounds of pal-
ladium and platinum, 379.

rays of light, on their application
to the purposes of pictorial repre-
sentation, 131.

theory of voltaic electricity, 201;
contact theory, 200.

Children (J. G.), his retirement from
the office of Secretary, 10.
Chinese lute, on the, 297.
Chlorates, conversion of into chlorides,

applied to the determination of equi-
valent numbers, 119.

Chlorides, conversion of into nitrates,
applied to the determination of equi-
valent numbers, 119.
Chlorine, the equivalent numbers of,
123.

action of, on azolitmine and or-
ceine, 234.

its action upon the ferrocyanate
of potassa, 239.

Chorda dorsalis, on the, 282.
Christie (S. H.) on the importance
of a more accurate determination
of the variation of the magnetic
needle, and likewise of the dip and
of the intensity of terrestrial mag-
netism, 21.