Ye 
Property in Canada, on the annual increase 
of, 112. ; 
Protococcus nivalis, on a peculiarity in the, 86. 
uleny on a new low-pressure atmospheric, 
Railways, on a new mechanical arrangement 
for communicating signals and working 
breaks on, 121. 
Railway system of Great Britain, on the pro- 
gress of the, 105. 
Rain, on the fall of, on the table-land of 
eee Mullay, Travancore, during 1846, 
Randall (W. B.) on common salt as a poison 
to plants, 58. 
Rankin (Thomas), meteorological observa- 
tions at Hugeate for 1847, 36. 
Ramsay (Prof.) on some points connected 
with the physical geology of the Silurian 
district between Builth and Pen-y-bont, 
Radnorshire, 73. 
Rays, on the action of the red, orange and 
yellow upon iodized and bromo-iodized 
* silver plates after they have been affected 
by daylight, and other phenomena of pho- 
tography, 50. .~ 
Reeve (Lovell) on a new species of Argonaut, 
A. Owenii, with observations on the A, gon- 
dola, Dillwyn, 80. 
Reflecting circle, on improvements in the, 117. 
Refraction, on two cases of uncommon atmo- 
spheric, 33. 
Retina, on the compensation of impressions 
moving over the, as seen in railway travel- 
ling, 47. 
, on the visual impressions upon the Fo- 
ramen centrale of the, 48. 
pressure on the, and their application to 
the diagnosis of the affections of the retina 
___ and its appendages, 82. 
Retzius (Prof.), notes on a Kirgis skull, 96. 
_———, measurements of a skull considered to 
be Burgundian, 96. 
Rhinanthus crista-galli, on the parasitic cha- 
racter of, 84. 
Roberts (George) on aremarkable tide in the 
British Channel, July 7, 1848, as it ap- 
peared at Lyme Regis, Dorset, 37. 
Roberts (Richard) on_a new element of me- 
chanism, 119. 
_ Robinson (Rev. Prof.) on “shooting stars” 
seen August 10, at Armagh, 37. 
- Rocks, on the boring of mollusca into, 125. 
_ Rogers (Prof. H. D.) on the geology of Penn- 
___ sylvania, 74. 
_ Rogers (Professors R. E. and W. B.) on a new 
process for analysing graphite, natural and 
artificial, 59. 
_ ——on the oxidation of the diamond in the 
liquid way, 60. 
on the absorption of carbonic acid by 
sulphuric acid, 61. 
Rope, subaqueous, for telegraphic and other 
purposes, 123. : 
INDEX II. 
» on the luminous spectra excited by_ 
135 
Rose, single (Rosa sempervirens), on the 
colour stripes of a, 86. 
Russell (J. Scott) on certain effects produced 
on sound by the rapid motion of the ob- 
server, 37. 
Sabelle, on the boring of, 125. 
Sace (Dr.) on the chemical and physiological 
effects of feeding fowls, and on the changes 
and chemical composition of eggs during 
incubation, 89. 
Salt as a poison to plants, on common, 58. 
Salt in food and the progress of Asiatic cho- 
lera, on a supposed connexion between an 
insufficient use of, 88. 
Schomburgk (Sir R. H.), remarks to accom- 
pany a comparative vocabulary of eighteen 
languages and dialects of Indian tribes in- 
habiting Guiana, 96. 
on a uniform system to reduce unwritten 
languages to alphabetical writing in Roman 
characters, 99. 
Sea, on the physical conditions regulating 
the vertical distribution of animals in the, 
83. 
Sepia in the lias of Gloucestershire, on some 
remains of the fossil, 66. 
Shells, on rare and recent British, 71. 
Signals on railways, on a new mechanical 
arrangement for communicating, 121. 
Siljestrom (Dr.) on those variations of the 
force and the direction of the terrestrial 
magnetism which seem to depend on the 
aurora borealis, 4. 
Silurian district between Builth and Pen-y- 
bont, on some points connected with the 
physical geology of the, 73. 
Sky, on a means of determining the apparent 
solar time by the diurnal changes of the 
plane of polarization at the north pole of 
the, 10. 
Skull, measurements of a, considered to be 
Burgundian, 96. 
, notes on a Kirgis, 96. 
Solar time, on a means of determining the 
apparent, by the diurnal changes of the 
plane of polarization at the north pole of 
the sky, 10. . 
Sound, on certain effects produced on, by the 
rapid motion of the observer, 37. 
Spectra, on the luminous, excited by pressure 
on the retina and their application to the 
diagnosis of the affections of the retina and 
its appendages, 82. 
Sponges of the chalk, Choanites Konigi, Man- 
tell, on a peculiarity in the structure of one 
of the fossil, 67. 
Spratt (Lieut.) on the influence of tempera- 
ture upon the distribution of the fauna in 
the Aigean Sea, 81. 
Stanley (Capt.) on the lengths and velocities 
of waves, 38. 
Stars, shooting, seen at Armagh, 37. 
Statistics, 101. 
Statistics of civil justice in Bengal in which 
the government is a party, 116. 
