138 



INDEX II. 



Iris, on a concentric, as seen from the 



ridge of Snowdon, 26. 

 Iron, mining and manufacture of, 117. 

 Iron-built ships, on the corrosion of, by 



sugar cargoes, 41. 



Jelly fishes, notice of, 69. 



Jet-pump, on an experimental apparatus 

 constructed to determine the efficiency 

 of the, 130. 



Jochmus (Lieut.-Gen.) on a journey to 

 the Balkan, or Mount Hsemus, from 

 Constantinople, 84. 



Johnston (Prof) on the origin and com- 

 position of the mineral called rotten- 

 stone, 42; on the formation of mag- 

 nesian limestone, ih. ; on the properties 

 and composition of the cocoa leaves, 

 43; on the causes, physical and che- 

 mical, of diversities of soils, ib.; on a 

 chemical cause of change in the com- 

 position of rocks, 52. 



Kemp (G. G.) on the waste of the Hol- 

 derness coast, 53. 



Kew Observatory, on the graduation of 

 standard thermometers at the, 30. 



Kukla (M.) en some new kinds of gal- 

 vanic batteries invented by, 44. 



La Fuente (Don M. B.) on the province 

 of Tarapaca, South Peru, 88. 



Land, on recent improvements in ma- 

 chines for tilling, 121. 



Lankester (Dr.), notice of jelly fishes, 69 ; 

 report of the committee for registra- 

 tion of the periodic phaenomena of 

 plants and animals, 70; on photo- 

 graphic plates and illustrations of 

 microscopic objects in natural history, 

 ib.; British freshwater polyps, ib. 



Latham (Dr.) on certain localities not in 

 Sweden occupied by Swedish popula- 

 tions, and on certain ethnological 

 questions connected with the coasts of 

 Livonia, Esthonia, Courland, and Goth- 

 land, 8(5 ; on the traces of a bilingual 

 town (Danish and Angle) in England, 

 88 ; ethnological remarks upon some 

 of the more remarkable varieties of the 

 human species, represented by indi- 

 viduals now in London, ib. 



Lawton (William) on the meteorology of 

 Hull, 27. 



Lichens, on British, containing dyeing 

 Lichens, 37- 



Life-boats, on the tubular or double, 113; 

 on improvements in the construction 

 of, 121. 



Light, 3 5 on an oscillatory theory of, 9. 



Lime, sulphate of, on the effect of, in 

 vegetable substances, 38 j new method 

 for determining amount of chlorine 

 contained in hypochlorite of, 48. 



Lime flowers, on, 45. 



Limestone, on the formation of magne- 

 sian, 42. 



Liquids, on the density of saturated va- 

 pours and their, at the point of transi- 

 tion, 11. 



Liverpool, on the education of the poor 

 in, 103. 



Locke (John), Ireland's recovery ; or ex- 

 cessive emigration and its reparative 

 agencies, 107. 



Locking (George), a brief description of 

 Locking and Cook's patent rotatory 

 valve-engine, and of its advantages, 

 120. 



Lowe (G.) on the advantages arising 

 from the purification of coal-gas, by 

 the application of water in an instru- 

 ment called the " scrubber," 45. 



Magnetic pliEenomena in Yorkshire, on, 6. 



Magnetism, S, 7. 



Magnetism of rotation, on the, in masses 

 of crystallized bismuth, 6 ; developed 

 in very small insulated metallic parti- 

 cles, ib. 



Manchester Water-works, description of 

 some of the large valves and other 

 machinery which have been employed 

 for the discharge of water at the, 113. 



Manganese, on a new method for deter- 

 mining the commercial value of oxide 

 of, 47. 



Materials, on the strength of, 36. 



Mathematics, 1. 



Matteucci (Prof.) on the distribution of 

 electrical currents in the rotating disc 

 of M. Arago, 5 ; on the magnetism of 

 rotation developed in very small insu- 

 lated metallic particles, 6 ; on the 

 magnetism of rotation in masses of 

 crystallized bismuth, ib. 



Mechanics, 113. 



Mechanical science, on the progress of, 

 116. 



Medusae, on the habits of fish in relation 

 to certain forms of, 70. 



Metallic particles, on the magnetism of 

 rotation developed in very small insu- 

 lated, 6. 



Meteorology, 26. 



Microscopic objects in natural history, 

 on photographic plates and illustra- 

 tions of, 70. 



Moon, on photographs of the, 14 ; on 

 drawings of the, ib. 



