INDEX. 
759 
J. 
Joint-systems of Ireland and Cornwall, 393 (see Haughton). 
L. 
Loess, 247 (see Prestwich). 
M. 
Magnetic disturbances, comparison of, at Kew and at Nertschinsk, 227. 
Magnetic observations in Columbia, Washington Territory, and Vancouver Island, 161. 
Marshall (J.). On the Brain of a Bushwoman; and on the Brains of two Idiots of European Descent} 
501. — Brain of the Bushwoman, 503; the idiots’ brains, 525; postscript, brains of other idiots, 
551 ; explanation of the plates, 555. 
Matthiessen (A.) and Vogt (C.). On the Influence of Temperature on the Electric Conducting-Power 
of Alloys, 167. — Alloys composed of two metals, 167 ; of three metals, 189; method of deducing 
the conducting-power of a pure metal from that of an impui'e one, 190. 
Miller (W. A.) and Huggins (W.). On the Spectra of some of the Fixed Stars, 413 (see Huggins). 
Molecular Physics, 327 (see Tyndall). 
N. 
Nebulae, catalogue of, 1. 
-, spectra of, 437. 
Neoids, 369 (see Rankine). 
Newton’s rule for the discovery of imaginary roots, 579 (see Sylvester). 
Nitrogen, substitution of, for hydrogen, 667 (see Griess). 
P. 
Pettigrew (J. B.). On the Arrangement of the Muscular Fibres in the Ventricles of the Vertebrate 
Heart, with Physiological Remarks, 445. — Ventricle of the fish, 445 ; of the reptile, 447 ; of the 
bird, 447; of the mammal, 448; summary of facts established, 450; inferences deduced from a 
consideration of the arrangement of the fibres in the ventricles of the bird and mammal, 484 ; 
explanation of the plates, 489. 
Prestwich (J.). Theoretical Considerations of the Conditions under which the Drift Deposits con- 
taining the Remains of extinct Mammalia and Flint Implements were accumulated, and on their 
Geological Age ; also, on the Loess of the Valleys of the South of England, and of the Somme and 
the Seine, 247. (For Contents, see p. 309.) 
R. 
Radiation of heat by gases, 201, 327 (see Tyndall). 
Rankine (W. J. M.). On Plane Water-Lines in two Dimensions, 369. (For Contents, see p. 390.) 
