102 
Ibbetson (Capt. L. L. V.S.) on electrotyped 
plants, 74. 
Ichaboe, on masses of salt discovered in the 
lowest portions of the island of, 39. 
Ichthyosaurus from the chalk in the neigh- 
hourhood of Cambridge, 60. 
India, on the measurement of two ares of the 
meridian in, 25. 
——,on some new additions among the 
mammalia to the fossil fauna of, 52. 
——,, on the fossil elephantine animals of, 62. 
, on the geographical distribution of 
plants in British, 74. 
, on the migratory tribes of central, 78. 
Injection, on an apparatus for minute, 86. 
Insanity, on the liability to, at different ages, 
87. 
Insects, fossil, of the secondary formations of 
Britain, 58. 
Trish Society, on the system of colonization 
practised by the, 91. 
Tron, peroxide of, in ashes of plants, 39. 
, on the trade in Scotland, 90. 
——, facts respecting the, 91. 
Isle of Man, on traces of drift-ice in the south 
side of the, 60. 
Ita palm of Guiana, description of the, 71. 
Ivory, on the vegetable, 70. 
Jarrett (Rev. Prof.) on algebraic equivalence,1. 
Jenyns (Rey. L.) on the turf of the Cam- 
bridgeshire fens, 75. 
Johnston (Prof.) on the chemical principles 
of the rotation of crops, 34. 
on the ashes of plants, 35. 
Joule (James P.) on the mechanical equiva- 
lent of heat, 31. 
Julien (M.) on the formation of a society to 
collect the statistics of all civilized coun- 
tries, 90. 
Kenrick (Mr.) on the statistics of Merthyr 
Tydvil, 90. 
Kemble (J. M.) on Dr. Kombst’s ethnogra- 
phic map of Great Britain and Ireland, 81. 
Kemp (Dr. George) on a natural system of 
organic chemistry, 31. 
Kimmeridge clay of the neighbourhood of 
Cambridge, on the, 42. 
King (Dr.) on the manners and habits of the 
South Sea Islanders, 80. 
Knox (Rev. Thomas) on the amount of rain 
which had fallen, with the different winds, 
at Toomavara, during five consecutive 
years, 17. 
Kombst’s (Dr.) ethnographical map of Great 
Britain and Ireland, 81. 
Laneashire, on certain traces of Roman colo- 
nization in, 80. 
Land, on the subsidence of the, at Puzzuoli, 
2. 
Lankester (Edwin) on the germination of 
plants, 69. 
on the Phytelephas macrocarpa (vege- 
- table ivory, or Tagua plant), 70. 
INDEX Il, 
Laplace’s functions, on the equation| of, 2s. !/ 
Latham (Dr. R.. G.) on: the increase..of. the 
ergot upon grasses, 79. ‘ieursdiel 
on the ethnography of the Chinese and 
Indo-Chinese nations, 77. he. me 
on the ethnography of America, 77; 
on the present state of philological evi- 
aaa as to the unity of the human race, 
et (Henry) on a thermometer stand,’ 
Laycoek (Dr. Thomas) on the communica- 
ting fibres of the brain in reference to 
thought and action, 84. ; 
on the vital statistics of America, 90; 
Leeson (Dr. H. B.) on the influence: of ‘gal- 
vanism on endosmose and exosmose, 83. 
on an apparatus for minute injection, 
Libellulide of.Europe, on the, 62. 
Liebig (Prof.) on mineral manure, 39. 
Light, on the elliptic polarization of, by me- 
tallic reflexion, 6. 
, on a new polarity of, 7. 
—, on the aberration of, 9. 
Lightning, description of the, at Alten, om 
August 16, 1844, 19. 
Lime, peroxide of, in ashes of plants, 35. 
Limestone, on the agency of land’ snails ia 
nepe holes and trackways im compact, 
Lloyd (Rev. H.) on the periodicity of mag- 
netic disturbances, 12. 
London, statistical and historical account of 
the ancient system of public charities in, 88. 
Longchamps (M. Selys de) on the genus Ar- 
vicola; on the Libellulid of Europe; on 
hybrids of the genus Anser, 62. BY. 
on obtaining accurate dates for the ap-~ 
pearance, &c. of birds, the migration of 
fishes, the budding, &c. of plants, 62. 
Luuar periodicities in earthquakes, 20. 
Macdonald (Dr.) on the unity of organization: 
as exhibited in the skeleton of animals, 62. 
on cranial vertebra, 85. fi 
Maclagan (Dr.) on the oil of assafcetida, 33: 
Machine for finding the numerical roots of 
equations, description of a, 3. 
Magnesia, peroxide of, in ashes of plants, 35. 
Magnetical and meteorological observations, 
on the results of the, at Sir J. M. Brisbane’s 
observatory, in 1842, 15. 
Magnetic disturbances, on the periodicity of, 
12. 
Magnetic machine, on a large, 15. 
Magnetic variation, on the connexion be- 
tween, with certain peculiarities of the 
earth’s structure, 16, 
Malacca guane, 29. 
Mammalia, on some new additions among the, 
to the fossil fauna of India, 52. 
Man, on the height, weight and strength of, 
80 / 
Manchester, on the police statistics of, 89 
| Manure, on mineral, 39. ’ 
