184. 



I^'DEx ir. 



Hydrogen and oxygen, combination 

 of, 68. 



Inglis (Dr.) on the ekull of Eugene 

 Aram, 125. 



Insects, on the modern classification 

 of, 113. 



Intestines, human, occurrence of cry- 

 stals in, 134. 



Iodides, medicinal and poisonous pro- 

 perties of the, 123. 



Ireland, geological structure of the 

 southern counties of, 81. 



, report of the railway commis- 

 sioners in, 171. 



Iron, on an improvement in the ma- 

 nufacture of, 68. 



, on foreign substances in, 41. 



Isograph, a new instrument, 155. 



Isometrical projection, instruments to 

 facilitate the process of, 155. 



protractor, 155. 



Isomorphism, exceptions to the law of, 

 59. 



Jenyns (Rev. L.) on certain species of 

 S'orex, 104. 



Jei vis (Major) on the trigonometrical 

 survey of India, 98. 



Johnston (Prof) on the origin of pe- 

 troleum, 60. 



on the law of isomorphism, 59. 



on a new compound of sulphate 



of lime with water, 50. 



on a new compound of bicyanide 



with binoxide of mercury, 59- 



on Middletonite, 60. 



on the resin of gamboge and its 



compounds, 60. 



Jones (Rev. H. L.), statistics of the 

 Universities of Oxford and Cam- 

 bridge, 170. 



Jukes (J. B.) on the position of the 

 rocks of the Penine chain of Derby- 

 shire, 79. 



Kingsley (J.) on criminal returns of 

 the empire, 177. 



Lang (Mr.) on improvements in ship- 

 building, 157. 



Lead, native diarseniate of, 46. 



, on theextractiun of silver from, 



50. 



Leithart (J.) on the stratification of 

 rocks, 88. 



LeithEU't (J.) on faults, and anticlinal 

 and synclinal axes, 89. 



Lepidotus, on the teeth of some of t!ie 

 species of this genus, 142. 



Leveling stave, an improved, 154. 



Light, on its propagation in vacuo, 2. 



, on its propagation in crystals, 6. 



, on some points connected with 



the tlieory of, 6. 



, action of grooved and trans- 

 parent surfaces upon, 13. 



, homogeneous, a new kind of po- 

 larity in, 13. 



, on its chemical action in the de- 

 coloration of recent solutions of 

 caustic potass, 61. 



, on the blackening of nitrate of 



silver by, 63. 



Lime, sulphate of, with water, on a 

 new compound of, 59. 



Locomotive engine, improved method 

 of working the valves of a, 160. 



London and Edinburgh, difference of 

 longitude between, 20. 



Long (Mr.), description of a cave at 

 Cheddar, 85. 



Longitude between London and Edin- 

 burgh, difference of, 20. 



Lunar volcanos, on, 93. 



Lungs, on abscess of the, 134. 



Lycopodium lepidophyllum, on, 119. 



Lyell (C.) on vertical lines of flint, 

 '87. 



Lynch (Lt.) on the recent ascent of 

 the river Euphrates, 99. 



McAlister (Rev. J.), statistical notices 

 of the blind asylum, 167. 



McDowall (P.) on the statistics of 

 Ramsbottom, 168. 



Magnet-electrometer, experiments on 

 a, 74. 



Magnetic action of the compass in iron 

 steam-ships, on correcting, 21. 



Mallet (R.) on the chemical action of 

 light in the decoloration of recent 

 solutions of caustic potass of com- 

 merce, 61. 



Mandingo, brief nccount of a, 97- 



Marsupiata, on, 105. 



Maule (Mr.) on a substitute for the 

 forcing-pump in supplying steam- 

 boilers, 163. 



Mathematics and physics, 1. 



Maugham (W.) on a new compound 

 of carbon and hydrogen, 72. 



