794 
INDEX. 
D. 
Double refraction, 760 (see Plucker). 
E. 
Echidna Hystrix, 671 (see Owen). 
Electromagnetic field, dynamical theory of, 459 (see Maxwell). 
Elements, nature of the chemical, 199 (see Kopp). 
Evans (F. J.) and Smith (A.). On the Magnetic Character of the Armour-plated Ships of the Royal 
Navy, and on the Effect on the Compass of particular arrangements of Iron in a Ship, 263. — De- 
duction of the formulae employed, 267 ; physical representation of the results, 271; numerical 
values of the coefficients, 278; tables of coefficients, 291 ; effect on the compass of particular masses 
of soft iron in a ship, 304. 
F. 
Flower (W. H.). On the Commissures of the Cerebral Hemispheres of the Marsupialia and Monotre- 
mata as compared with those of the Placental Mammals, 633. — Description of the plates, 650. 
Foraminifera from the Atlantic Ocean, &c., 325 (see Parker). 
Forchhammer (G.). On the Composition of Sea-water in the different parts of the Ocean, 203. — - 
Elements which occur in the water of the ocean, 204; on the quantitative analysis of sea- water, 
214; distribution of the salts in different parts of the sea, 219; general results of the preceding 
investigation, 226 ; principal currents of the Atlantic, 239 ; chemical decomposition in sea-water, 
242 ; tables, 246. 
Fossil plants found in coal-seams, 579 (see Binney). 
Frog’s tongue, minute anatomy of the papillae of, 443 (see Beale). 
G. 
Gases, spectra of, 1 (see Plucker). 
Geometry, on a new, of space, 725 (see Plucker) . 
Glyptodon, osteology of, 31 (see Huxley). 
H. 
Harley (G.). On the Influence of Physical and Chemical Agents upon Blood; with special reference 
to the mutual action of Blood and the Respiratory Gases, 687. — Influence of physical agents, 689 ; 
of chemical agents — animal products, 699; of vegetable products, 704; of anaesthetics, 713; of 
mineral substances, 718. 
Hittorf (J. W.) and Plucker (J.). On the Spectra of Ignited Gases and Vapours, &c., 1 (see 
Plucker). 
Hoplophoridce, 31 (see Huxley). 
Huxley (T. H.). On the Osteology of the germs Glyptodon, 31. — Part I. History of the discovery and 
determination of the remains of the Hoplophoridae, 31. Part II. Description of the skeleton of 
Glyptodon clavipes, 43 ; of the skull, 43 ; of the vertebral column, 58; description of the plates, 69. 
