Jenkins (John), tables of meteorological pha- 
nomena observed at Swansea, 23. 
Joints, on panergous, 123. 
Joule (J. P.) on the mechanical equivalent of 
heat and on the constitution of elastic fluids, 
21. 
Kenrick (Mr.), contributions to the statistics 
of Darlaston, 101. 
Kirgis skull, on a, 96. 
Lankester (Dr. E.) on some vegetable mon- 
strosities illustrating the laws of morpho- 
logy, 85. 
Languages, on a uniform system to reduce 
unwritten, to alphabetical writing in Roman 
characters, 99. 
Lee (Dr. John) on meteorological observa- 
tions continued at Alten in Finmark in 
1846 and 1847, 32. 
Leg, improved construction of an artificial, 
117. 
Lennard’s microscopical drawings illustrating 
the structure of bone, exhibited, 125. 
Llanrwst, periodical birds observed in the 
years 1847 and 1848, near, 84. 
Lias, on the plants of the “insect limestone” 
of the lower, 66. 
Lias of Gloucestershire, on some remains of 
the fossil sepia in the, 66. 
_ Light, on a new case of interference of, 3. 
, on the refraction of, beyond the critical 
angle, 5 
, on a difficulty in the theory of, 5. 
» on the identity of the existences or 
forces of, 53. 
_——, on the influence of, in preventing che- 
 mical action, 54. 
‘Lime bed in the Isle of Wight, on the posi- 
tion ofthe phosphate of, 69. 
Lloyd (Rev. H.) on the mean results of ob- 
servations, 1. 
_ Lundy island, on the geology of, 79. 
_ Lyme Regis, on a remarkable tide at, 37. 
‘MacAndrew (Robert) on some marine ani- 
_ mals from the Bristol Channel, 125. 
Macdonald (Dr.) on the erroneous division of 
the cervical and dorsal vertebre, and the 
_ connexion of the first rib with the seventh 
_ vertebra, and the normal position of the 
head of the rib in mammals, 89. 
Macropodidz, on the development and change 
_of dentition in the, 91. 
‘Madder, on the colouring matters of, 54. 
agnetic action, on experiments belonging to 
- anew, 2. 
Magnetic force, terrestrial, on the equilibrium 
_ of magnetic or diamagnetic bodies of any 
J form, under the influence of the, 8. 
M Magnetic or diamagnetic bodies of any form, 
on the equilibrium of, under the influence 
of the terrestrial magnetic force, 8. 
Magnetism, on those variations of the force 
and the direction of the terrestrial, which 
seem to depend on the aurora borealis, 4. 
INDEX II. 
133 
Magnetism, on the identity of the existences or 
forces of, 53. 
Malta, on an extensive mud-slide in the 
island of, 70. 
Mammals, on the normal position of the 
head of the rib in, 89. 
Mammalia, on the homologies and notation 
of the dental system in, 91. 
Manufactures, on the application of gutta 
percha to, 122. 
Marginopora and allied structures, on, 67. 
Marine animals from the Bristol channel, on 
some, 125. 
Marl or phosphate of lime bed in the Isle of 
Wight, on the position of the chloritic, 69. 
Marshes, on the application of steam power 
to the drainage of, 117. 
Mathematics, 1. 
Maury (Lieut.) on wind and current charts 
of the North Atlantic, 34. 
Mechanism, on a new element of, 119. 
Mechanics, 117. 
Mendicancy, statistics on, 105. 
Metalliferous deposits, on the polarity of clea- 
vage planes, their conducting power, and 
their influence on, 69, 
Meteorological and other observations made 
in India and Egypt, 17. 
Meteorological observations continued at Alten 
in Finmark in 1846, 1847, with observations 
on them, 32. 
at Huggate for 1847, 36. 
Meteorological phenomena observed at Swan- 
sea, tables of, 23. 
Meteorological research, on rendering the 
electric telegraph subservient to, 12. 
Meteors, on a new instrument for observing 
the apparent positions of, 13. 
Meteorite, on the fall of a, in two pieces, at 
Braunau in Bohemia, 71. 
Miller (Prof. W. A.), analysis of wrought iron 
produced by cementation from cast iron, 
55. 
Milward (A.) on an extensive mudslide in 
the island of Malta, 70. 
on the origin of “ dirt-bands”’ on gla- 
ciers, 71. 
Mineral basin of South Wales, on the subsi- 
dences which have taken place in the, 71. 
, on the great anticlinal line of the, 75. 
Mine-ventilator, description of a new, 120. 
Moberley (Rev. Dr.) on a large plesiosaurus 
discovered in lias at the alum-works at 
Kettleness, 78. 
Moffatt (Dr.) on the existence of ozone in the 
atmosphere, 56. 
Moggeridge (Matthew) on two cases of un- 
common atmospheric refraction, 33. 
on a peculiarity in the Protococcus niva- 
lis, 86. 
Mollusca, on sounds emitted by, 80. 
, on the sounds emitted by, at Bathcoloa, 
Ceylon, 82. 
, on the boring of, into rocks, 125. 
Mollusks, genus of Gasteropodous, inhabiting 
the seas of Great Britain and Ireland, 79. 
