134 
Moon, on the sources of the Nile in the moun- 
tains of the, 63. 
, on improvements in the reflecting circle, 
in reference to an instrument for measuring 
angular distances of the, 117. 
Moses (F.) on the subsidences which have 
taken place in the mineral basin of South 
Wales, between the Llynvi valley on the 
east, and Penllergare on the west, 71. 
Morgan (W.) on some bones found in the bed 
of the Tawey, 71. 
Morphology, on some vegetable monstrosities 
illustrating the laws of, 85. 
Mud-slide in the island of Malta, on an ex- 
tensive, 70. 
Nasmyth (James) on a peculiar property of 
coke, 56. 
on the chemical character of steel, 57. 
Nerves, on the structure of the, in the glands 
at the inferior surface of the tongue, 83. 
, on the value of the origins of, as a homo- 
logical character, 93. 
Newton’s rings, on the perfect blackness of 
the centre of, 7. 
Nile, on the sources of the, in the mountains 
of the moon, 63. 
, on the sources of the White, 78. 
Northampton (the Marquis of), letter read 
from M. Boguslawski to, on the fall of a 
meteorite, in two pieces, at Braunau in Bo- 
hemia, 71. 
Observations, on the mean results of, 1. 
Odostomia, on the recent species of, a genus 
of Gasteropodous mollusks inhabiting the 
seas of Great Britain and Ireland, 79. 
Oldham (Prof.) on the geology of the county 
of Wicklow, 71. 
Ormerod (G. W.) on the drainage of a portion 
of Chat Moss, 72. 
Ornithorhynchus, on the os humero-capsulare 
of the, 79. 
* Owen (Prof.) on the communications between 
the tympanum and palate in the crocodiles, 
on the os humero-capsulare of the Orni- 
thorhynchus, 79. 
on the homologies and notation of the 
dental system in mammalia, 91. 
on the value of the origins of nerves as 
a homological character, 93. 
Ozone, on the existence of, in the atmosphere, 
56. 
Palate in the crocodiles, on the communica- 
tions between the tympanum and, 79. 
Palmellez, on an apparently undescribed state 
of the, with a few observations on gemma- 
tion in the lower tribes of plants, 87. 
Pendulums, on the resistance of the air 
to, 7. 
Pennsylvania, on the geology of, 74. 
Pen-y-bont and Builth, on some points con- 
nected with the physical geology of the 
Silurian districts between, 73. 
INDEX II. 
Percy (Dr.) on some of the alloys of tung- 
sten, 57. 
Petermann (Augustus), hydrography of the 
British Isles, 73. 
-—— on the distribution of the population of 
Great Britain and Ireland; illustrated by 
maps and diagrams, 113. 
Phillips (John), letter to, from Mansfield Har- 
rison, on a self-registering thermometer, 
14, 
on the colour stripes of a rose (Rosa 
sempervirens), single, 86. 
ethnographical note on the vicinity of 
Charnwood Forest, 99. 
Phillips (R.) on some properties of alumina, 
58 
Photography, on the action of the red, orange, 
and yellow rays upon iodized and bromo- 
iodized silver plates after they have been 
affected by daylight, and other phenomena 
of, 50, 
Physics, 1. 
Physiology, 79. 
Pipes, on the patent multitubular, 123. 
Planes, on the polarity of, their conducting 
power, and their influence on metalliferous 
deposits, 69. 
Plants, on common salt as a poison to, 58. 
of the carboniferous period, on the oc- 
currence in the Tarentaise of certain species 
of fossil, associated in the same bed with 
belemnites, 64. 
—— of the “ insect limestone” of the lower 
lias, on the, 66. 
——, on gemmation in the lower tribes of, 87. 
Plesiosaurus discovered in lias at the alum- 
works at Kettleness, described, 78. 
Pliicker (Herr) on experiments belonging to 
a new magnetic action, 2. 
Polarization at the north pole of the sky, on 
a means of determining the apparent solar 
time by the diurnal changes of the plane 
of, 10. 
Pollen, on the development of, 84. ; 
Polystomella crispa and the classification of 
foraminifera, 125, 
Population of Great Britain and Ireland, on 
the distribution of the, 113. 
of all towns containing 10,000 inhabit- 
ants and upwards, synopical table of the, 
113. 
Portlock (Lt.-Col.) on apparent changes in the 
level of the coast near Portsmouth, 72. 
on sounds emitted by mollusea, 80. 
Portsmouth, on apparent changes in the level 
of the coast near, 72. 
Powell (Rev. Prof.) on an explanation of the 
“ Beads” and “ Threads” in annular 
eclipses, 2. 
on a new case of interference of light, 3. 
observations of the annular eclipse of 
Oct. 9, 1847, 3. 
, contributions to academical statistics, 
105. 
Printing, anastatic, and its various combina- 
tions, 120. 
