356 
INDE X. 
F. 
Forbes (G.) and Young (J.) (see Young). 
G. 
Gases, absorption of radiant heat by, 291 (see Tyndall). 
H. 
Heat, radiant, conversion of, into sound, 291 (see Tyndall). 
K. 
Kunkel (Dr.), examination of recent researches of, , 2 (see Sanderson). 
L. 
Light , velocity of white and of coloured, 231 (see Young). 
Lucifer , development and metamorphosis of, 57. 
M. 
Magnus, examination of his experiments on the absorption of radiant heat by gases, 301 (see Tyndall). 
Meteorology, application to, of results obtained respecting the absorption of heat by aqueous vapour, 343. 
Munk (Professor), examination of recent researches of, 2 (see Sanderson). 
P. 
Parker (W. K.). On the Structure and Development of the Skull in Sturgeons ( Acipenser ruthenus and 
A. sturio ), 139.—Introduction, 139; bibliography, 140; summary and comparison with other types, 
176; explanation of the plates, 181. 
S. 
Sanderson (J. B.). On the Electromotive Properties of the Leaf of Dionasain the Excited and Unexcited 
States, 1.—Examination of the recent researches of Professor Munk and Dr. Kunkel on plant elec¬ 
tricity, 2; description of the methods and instruments employed, 10; electromotive properties of the 
uninjured leaf, 18; the electrical effects of excitation, 25; excitability, 40; relation between the exci¬ 
tatory process and the mechanical effect, 48; summary of experimental results, 51; conclusion, 53. 
Sound, excited by radiant heat, 291 (see Tyndall). 
Sphere , internal stress in a strained elastic, 188 (see Darwin). 
Sturgeons, development of the skull in, 139 (see Parker). 
