136 



double life-boat invented by Henry 

 Richardson, 113. 



Chick in ovo, on some discoveries relative 

 to the, 68. 



Chili, on the proposed new route betv^^een 

 the Atlantic and Pacific, by the River 

 Maule in, 82. 



Chlorine, on a new method for deter- 

 mining the amount of available, con- 

 tained in hypochlorites of lime, soda, 

 or potash, 48. 



Choanites Konigi, 51. 



Ciliary motion, on the nature of, 66. 



Clarke (B.) on a new system of classify- 

 ing plants, 63. 



Claudet (A.) on the practice of the Da- 

 guerreotype, 4; on the angle to be 

 given to binocular photographic pic- 

 tures for the stereoscope, ib. 



Claussen (Chevalier) on the effect of the 

 sulphate of lime upon vegetable sub- 

 stances, 38. 



Coal-field, on a singular fault in the 

 southern termination of the Warwick- 

 shire, 62. 



Coal-gas, on the advantages arising from 

 the purification of, by the application 

 of water, 45. 



Cocoa leaves, on the properties and com- 

 position of the, 43. 



Colours, homogeneous, on the mixture 

 of, 5. 



Cometes, new species of, 68. 



Conferva Linuni, on the structure of the 

 endochrome in, 62. 



Cooper (Henr)-) on the mortality of Hull 

 in the autumn of 1849, 102; on the 

 prevalence of diseases in Hull, 103. 



Cornbrash of Gloucestershire, and part 

 of Wilts, on the, 50. 



Crime, on the causes, extent, and pre- 

 ventives of, 112. 



Crosskiil (A.) on reaping machinery, 

 114. 



Crustacea, on the development of the ova 

 in some species of isopodous and am- 

 phipodous, 66. 



Crystalline bodies, on the elasticity of 

 stone and, 36. 



Crystalline structure in crystallized pow- 

 ders, on the ])roduction of, by com- 

 pression and traction, 3. 



Crystallization, on the optical phsenomena 

 and, of tourraaline,tiUu.ium,and quartz 

 within mica, amethyst, and topaz, 3. 



Crystals, from the sea- coast of Africa, on, 

 45 ; pseudomorphous, in new red sand- 

 stone, 61. 



Currency and banking, suggestions for 

 an improved system of, 97. 



Daguerreotype, on the practice of the, 4. 



Danes and Scandinavians, on the in- 

 fluence of the invasion of the, in early- 

 times, on certain localities in England, 

 73. 



Decimal coinage, on a proposed plan for, 

 112. 



Deep-sea soundings and errors therein 

 from strata currents, with suggestions 

 for their investigation, 22. 



Denny (Henry) on the remains of the 

 Hippopotamus found in the Aire Valley 

 deposit near Leeds, 51. 



Dialects, on the, north and south of the 

 Humber, 73. 



Diatomaceae found in the neighbourhood 

 of Hull, 63. 



Disc of M. Arago, on the distribution of 

 electrical currents in the rotating, 5. 



Domville (W. C.) oa some living aquatic 

 birds at San try House, near Dublin, 

 66. 



Duncan (P.) on the nature of ciliary 

 motion, 66. 



Dwerhagen (Herman C), substance of a 

 topographical essay on the navigation 

 of the rivers Plata, Parana, Paraguay, 

 Vermejo, and Pilcomayo, 7^- 



Earl (G. Windsor) on the progress of 

 discovery in the western half of New 

 Guinea from the year 1828 up to the 

 present time, 7^- 



Education, on progressive, practical, and 

 scientific, 107. 



Edwards (James), electoral statistics of 

 the British Empire, 107. 



Electrical currents, on the distribution 

 of, in the rotating disc of M. Arago, 5. 



Electricit)-, 3 ; on the cause of the trans- 

 mission of, along conductors generally, 

 38 ; on the conduction of, by flame 

 and gases, 42. 



Emigration, excessive, and its reparative 

 agencies, 107. 



Endochrome, structure of the, 62. 



Ethnology, 73. 



Exiey (The Rev. Thomas) on the cause 

 of the transmission of electricity along 

 conductors generally, and particularly 

 as applied to the electric telegraph 

 wires, 38. 



Fairbairn (William) on the progress of 



mechanical science, 116. 

 Findlay (A. G.) on the currents of the 



Atlantic and Pacific oceans, 76. 

 Fish, on the habits of, in relation to certain 



forms of medusae, 70. 

 Fishes, notice of jelly, 69. 



