INDEX. 
803 
P. 
Parker (W. K.). On the Structure and Development of the Skull in the Mammalia.—Part II. 
Edentata, 1.—Part III. Insectivora, 121. 
Phylloglossum Drummondii, development and morphology of, 665 (see Bower). 
Phy sical phenomena, applications of dynamical principles to, 307 (see Thomson). 
Potnting (J. H.). On the Connexion between Electric Current and the Electric Magnetic Inductions in 
the surrounding field, 277. 
R. 
Rayleigh (Lord). On the Constant of Magnetic Rotation of Light in Bisulphide of Carbon, 343. 
Rayleigh (Lord). On the Clark Cell as a Standard of Electro-motive Force, 781. 
S. 
Samarium, and radiant matter spectroscopy, 691 (see Crookes). 
Shaw (H. S. H.). The Theory of Continuous Calculating Machines and of a Mechanism of this class on 
a New Principle, 367. 
Shall, structure and development of, in the Mammalia.—Part II, Edentata, 1.—Part III. Insectivora, 
121 (see Parker). 
Spectra, absorption, of the alkaloids, 471 (see Hartley). 
Spectroscopy, radiant matter.—Part II. Samarium, 691 (see Crookes). 
Sponge-remains in lower and upper greensand of the south of England, 403 (see Hinde). 
T. 
Terrestrial Magnetic Force in the Ptorizontal Plane, results deduced from the Measures of, 679 (see AiRy). 
Thomson (J. J.). On some Applications of dynamical Principles to Physical Phenomena, 307. 
V. 
Vortex Pings, theory of, 725 (see HicKs), 
10 u U a* 1831? 
