670 
INDEX. 
Conduction of heat in gases, 85. 
Corals, fossil, 643 (see Duncan). 
Croonian Lecture, 571 (see Sanderson). 
Cuttle-fish, optic lobes of the, 155. 
D. 
Diffusion of gases, theory of, 73. 
Duncan (P. M.). On the Genera Heterophyllia, Battersbyia, Palceocyclus, and Asterosmilia, 643. 
E. 
Equivalent volumes, law of, deduced from dynamical theory, 77. 
Esson (W.) (see Harcourt, A. V., and Esson, W.). 
Everett (J. D.). Account of Experiments on Torsion and Flexure for the Determination of Rigidities, 
139. — Rigidity of glass, 139; of brass, 146 ; of steel, 149. 
F. 
Flower (W. H.). On the Development and Succession of the Teeth in the Marsupialia, 631. 
Foster (G. C.) (see Matthiessen, A., and Foster, G. C.). 
Fovea centralis of human retina, 109 (see Hulke). 
G. 
Gases, dynamical theory of, 49. 
Gun-cotton, 255 (see Abel). 
Gunther (A.). Contributions to the Anatomy of Hatteria ( Rhjnchocephalus , Owen), 595. 
H. 
Harcourt (A. Y.) and Esson (W.) On the Laws of Connexion between the Conditions of a Chemical 
Change and its Amount. II. On the Reaction of Hydric Peroxide and Hydric Iodide, 117. 
Hatteria, anatomy of, 595 (see Gunther) . 
Hermite’s canonical form of the quintic, 541 (see Cayley). 
Heterophyllia, 644 (see Duncan). 
Hulke (J. W.). On the Anatomy of the Fovea Centralis of the Human Retina, 109. 
Impregnation of ova, mode of effecting, 459. 
I. 
J. 
James (Col. Sir Henry) (see Clarke, Captain A. R.). 
