INDEX. 
671 
M. 
Magnetic declination, lunar-diurnal variation of, 503. 
Magnetism and electricity, researches in, 89 (see Wilde). 
Magneto -electric machine, construction of a new and powerful, 101 (see Wilde). 
Man, place of, among the Primates, 391 . 
Marsupialia, teeth of, 631 (see Flower). 
Matthiessen (A.) and Foster (G. C.). Researches into the Chemical Constitution of Narcotine, and of 
its Products of Decomposition. — Part II., 657. 
Maxwell (J. C.). On the Dynamical Theory of Gases, 49. 
Micropyle, function of the, 459. ' 
Mivart (St. George). On the Appendicular Skeleton of the Primates, 299. 
Monsters, artificial production of, suggested, 467. 
Muscular fibres, arrangement of, in bladder and prostate, 17 (see Pettigrew). 
N. 
Narcotine, 657 (see Matthiessen). 
Neumayer (G.). On the Lunar-diurnal Variation of the Magnetic Declination, with special regard to 
the Moon’s Declination, 503. 
0 . 
Opianic acid, derivatives of, 657 (see Matthiessen). 
Optic lobes of the Cuttlefish, 155. 
Ovum of osseous fishes, 431 (see Ransom). 
P. 
Palceocyclus, 651 (see Duncan). 
Pettigrew (J. B.). On the Muscular Arrangements of the Bladder and Prostate, and the manner in 
which the Ureters and Urethra are closed, 17. 
Poisons, effect of, on impregnated ova, 467, 480. 
Primates, appendicular skeleton of the, 299. 
Q. 
Quadratic forms, 255 (see Smith). 
Quantics, 513 (see Cayley). 
R. 
Ransom (W. H.). Observations on the Ovum of Osseous Fishes, 431. — Unimpregnated ovum, 431; 
impregnated ovum, 456 ; concluding remarks, 494 ; explanation of the plates, 496. 
Respiration, influence of the movements of, on the circulation of the blood, 571 (see Sanderson). 
Retina, human, anatomy of the, 109 (see Hulke). 
Rhynchocephalus, anatomy of, 595 (see Gunther). 
Rigidities of glass, brass, and steel, 139 (see Everett). 
Roscoe (H. E.). On the Chemical Intensity of Total Daylight at Kew and Para, 1865, 1866, and 1867, 
555. — Kew observations, 555 ; Para observations, 563. 
