INDEX, 
617 
Light, on the influence of iodine in rendering argentine compounds sensitive to, 325. 
, on the theoretical explanation of an apparent new polarity in, 225. 
Litmus, archil and, contributions to the chemical history of, 253. Section III. Of litmus, 298 ; 
I. Of erythrolein, 299; II. Of erythrolitmine, 301 ; III. Of azolitmine, 304; IV. Of spaniolit- 
mine, 307. Section IV. Of the decolorization of the bodies which exist in archil and litmus, 
311 ; action of chlorine on azolitmine, 321 ; action of chlorine on erythrolitmine, 322. 
M. 
Maclear (Thomas, Esq.). Further particulars of the fall of the Cold Bokkeveld meteorolite, 177. 
Magnetic dip and intensity, table of observations of the, made at sea between Falmouth and the 
Falkland Islands, 142. 
. Table of observations of the, made at sea in a voyage from England 
to Australia, 146, 147, 150. 
Magnetic inclination and intensity, lines of, in the Atlantic Ocean, 129 ; intensity, between the 
Cape of Good Hope and Australia, 140. 
Magnetism, terrestrial, contributions to, 129 ; § i. Lines of inclination and intensity in the Atlantic 
Ocean, 129; §ii. Lines of intensity between the Cape of Good Hope and Australia, 140. 
Media, absorbent, of the analysis of the chemical rays of the spectrum by, 37 ; of the exalting and 
depressing power exercised by certain media, under peculiar circumstances of exposure to 
solar light, on the intensity of its chemical action, 43. 
Meteorolite (the Cold Bokkeveld). Further particulars of the fall of, 177. 
Muscle ( voluntary ). On the minute structure and movements of, 457 ; primitive fasciculus, 458 ; 
table of diameter of primitive fasciculi, 460; of the transverse striae, 461 ; of the sarcolemma, 
or tunic of the primitive fasciculus, 474 ; of the corpuscles of the primitive fasciculus, 482 ; 
of the extremities of the primitive fasciculi, and their union to other structures, 485 ; on the 
mechanism of the movement of voluntary muscle, 487 ; recapitulation of the chief results, 493 ; 
postscript, 494 ; explanation of the plates, 495. 
Muscular fibre formed of cells derived from corpuscles of the blood, 601. 
N. 
Nervous system, on the, 245 ; the spinal nerves, ibid . ; the respiratory system of nerves, 249 ; of 
the supply of blood to the nerves of the respiratory system, 253. 
Nutation, precession and, phenomena of, assuming the interior of the earth to be fluid and hete- 
rogeneous, 193. 
O. 
Opoponax , resin of, 352. 
Ovum, changes in the ovarian, preparatory to fecundation, 530 ; changes in the, immediately 
after fecundation and before it leaves the ovary, 534 ; after its discharge from the ovary, 536 ; 
no fixed relation between the degree of development of ova and their size, locality, or age, 
544; ova found in the Fallopian tube and uterus of the Rabbit, 564. 
Oxmantown (Right Honourable Lord). An account of experiments on the reflecting telescope, 
503. 
P. 
Palgrave (Sir Francis, K.H.). An account of the shooting stars of 1095 and 1243, 175. 
