258 



SECTIONS. INDEX OP SUBJECTS, 



Hydro-electric machine, colossal, W. G. 

 Armstrong on a, 1845, 30. 



Hydrofluoric acid, Napier's process of etch- 

 ing glass in relief by, 1859, 88. 



Hydrogen, quasi-metallic character of, 1833, 



43- 

 , Kev. T. Exley on the specific gravity 



of, 1838, 64. 

 , Prof. E. Davy on a new gaseous bicar* 



buret of, 1836, 62. 

 ; gas, on its application in the manu- 

 facture of iron, 1838, 68. 

 gas, W, Maugham on an attempt to 



liquefy, 1838, 73. 

 — — and carbon, Prof. E. Davy on a new 



gaseous compoimd of, 1837, 50. 

 and carbon, W. Maugham on a new 



compoimd of, 1838, 72. 



— and its compounds, W. E>. Grove on 

 the peculiar cooling effects of, in cases of 

 voltaic ignition, 1848, 54. 



■ and oxygen, Eev. T. Exley on the com- 

 bination of, 1838, 68. 



, sulphuretted, Dr. Lankester on the 



production of, 1841, 57. 



' ,■ sulphuretted, on its action on salts of 



zinc and copper, by Prof. F. C. Calvert, 

 1855, 51. 



Hydrography of the British Isles, A. Peter- 

 mann on the, 1848, 73. 



Hydrophobia, observations on, by Dr. Dal- 

 zell, 1850, 129. 



Hygrometer, dew-point, improvements in a, 

 by Prof. Connell, 1855, 38. 



, Leslie's, with a new scale, H. H. Wat- 

 son on the use of, 1834, 569. 



, register, for regulating the atmospheric 



moisture of houses, J. G. Appold on a, 

 1850, 170. 



Hygrometers, self-registering, E. Vivian on 

 results of, 1860, 55. 



Hygrometric formula usually applied to ob- 

 servations made with wet and dry baro- 

 meters, Dr. Apjohn on a method of testing 

 the, 1843, 36. 



moisture in the air. Dr. Andrews on 



an apparatus for determining the quantity 

 of, 1851, 29. 



Hygrometrical calculations, description of a 



sliding-rule for, by J. Welsh, 1851, 42. 

 Hylurgus piniperda, some remarks on, 1836, 



98. 

 Hymenocaris, fossil, new genus, description 



of the, by J. W. Salter, 1852, 58 ; H. ver- 



micauda, 58. 

 Hypanthocrinite, Prof. Buckman on the dis- 

 coverer of a new species of, in the upper 



Silurian strata, 1846, 61. 

 Hypanthocrinites granulatus, 1847, 61. 

 Hyperbola, equilateral, H. F. Talbot on a 



new propertjr of the, 1836, 2, 

 , rectangular, G. Thurnell on a mode 



of constructing the, by points, 1858, 5. 

 Hyperconic sections and elliptic integrals, 



Eev. J. Booth on the relations between, 



1860, 4. 



Hypericum linarifolium, Vahl, new to the 



English flora, 1839, 92. 

 Hyperodapedon Gordoni, from the neigh- 

 bourhood of Elgin, Prof. Huxley on, 1859^ 



261. 

 Hypochlorites of lime, soda, or potash. Dr. 



A. P. Price on the amoimt of available 



chlorine in, 1853, 48. 

 Hyposulphites of the organic alkalies, H. 



How on the, 1854, 70. 

 Hypoxanthite, new mineral, 1855, 70. 

 Hysteria, observations on, by Dr. Dalzell, 



1850, 129. 



Ice at its melting-point, Prof. J. Thomson 

 on recent theories and experiments on, 

 1859, 23. 



, production of, in a vessel at a glowing 



red heat, M. Boutigny on the, 1845, 27. 



, on the plasticity of, by Prof. J. Thom- 

 son, 1857, 39. 



, glacier. Prof. J. D. Forbes on an at- 

 tempt to establish the plastic nature of, 

 1844, 24. 



Ice-action observed in the north of Scotland, 

 Prof. J. Nicol on, 1855, 88. 



as observed in the Hudson's Bay and 



Straits, by Dr. J. Eae, 1860, 174. 



Icebergs, Dr. J. Eae on the formation of, 



, in the Hudson's Bay and Straits, 1860, 

 174. 



Ichneumon, J. Blackwall on a species of, 

 whose larva is parasitic on spiders, 1842, 

 68. 



IchthyoKtes and Crustacea in the tilestones 

 of Kington, Herefordshire, E. Banks on 

 the discovery of, 1855, 78. 



of Farnell Eoad, Forfarshire, Sir P. 



de M. G. Egerton on the, 1860, 77. 



Ichthyosauri, on the skin and food of, by 

 C. Moore, 1856, 69. 



Ichthyosaurus and other fossils, on the dis- 

 covery of, in the Arctic searching expedi- 

 tion, 1852-54, by Capt. Sir E. Belcher, 

 1855, 79. . . 



in the lias limestone, near Tewkesbury, 



discovery of an, 1839, 70. 



, jaws of an, from the chalk in the 



neighbourhood of Cambridge, Mr. Carter 

 on the, 1845, 6a. 



, Prof. Owen on the teeth of the, 1838, . 



144. 



, Prof. Strickland on an anomalous 



structure in the paddle of an, 1844, 51. 



missouriensis, 1833, 440. 



tenuirostris from the lias of Somerset- 

 shire, 1831-32, 587. 



Icosian calculus. Sir W. E. Hamilton on the,- 

 1857, 3. 



Idoerase, T. Eichardson on the composition 

 of, 1839, 52. 



Idiocy, Dr. Gaskell on the want of educa- 

 tional establishments for, 1847, 97. 



, infantile. Dr. Coldstream on, 1860, 



128. 



Idiots, infantile, in the United Kingdom, 



