104 
Proteunogenic bodies, 31. 
Pryme (Prof.) on the different methods em- 
ployed to estimate the amount of popula- 
tion, 91. 
Purpura hemorrhagica, on the appearance of 
the surface of the heart in a case of, 85. 
Puzzuoli, on the subsidence of the land at, 
52. 
Quaternions, exposition of a system of, 3. 
Railway gradients, on, 93. 
Rain, on the amount of, which had fallen at 
Toomavara during five consecutive years, 
Raleigh (Sir Walter), on the El Dorado of, 
50 
Ramsay (A. C.) on the denudation of South 
Wales and the adjacent counties, 50. 
Rankin (Rev. T.), meteorological observations 
made in 1844, at Huggate, Wold, York- 
shire, 18. 
on the ancient tumuli in the Yorkshire 
Wolds, 82. 
Reade (Rev. J.B.) on the cilia and ciliary 
currents of the oyster, 66. 
Rectilinear motion, on a method of convert- 
ing into rotatory, 94. 
Retina, on two new properties of the, 8. 
Robertsonian saxifrages, on the Irish species 
of, 74. 
Rocks, on the composition of slate, 38. 
Roman colonization, on certain traces of, in 
Lancashire, 80. 
Rosse (the Earl of) on the nebula 25 Her- 
schel, or 61 of Messier’s catalogue, 4. 
Rotatory motion, on a new method of con- 
verting rectilinear into, 94. 
Royle (Dr.) on the geographical distribution 
of plants in British India, 74. 
Salt, on masses of, discovered in the lowest 
portions of guano on the island of Icha- 
boe, 39. 
Salter (J. W.) on some important additions 
to the fossils of the Silurian rocks, 57. 
on the structure and relations of Cor- 
nulites, and other allied Silurian fossils, 
57. 
Sandstone of the neighbourhood of Cam- 
bridge, on the, 41. 
Savings’ banks, on the progress and present 
state of, in the United Kingdom, 87. 
Saxby (S. M.) on the connexion between 
magnetic variation with certain peculiari- 
ties of the earth’s structure, 16. 
Saxifraga Geum, on a monstrosity occurring 
in, 72. 
Saxifrages, on the Irish species of Robertso- 
nian, 74. 
oa on posidonian, amidst trappean beds, 
6 
Schomburgk (Sir R.) on the lake Parima, the 
El Dorado of Sir Walter Raleigh, and the 
geography of Guiana, 50. 
INDEX II. 
Schomburgk (Sir R.) on the Murichi, or Ita 
Palm of Guiana, 71. 
—— on the superstitious and astronomical 
knowledge of the Indians of Guiana, 82. 
Schweitzer (E. G.) on three species of fucus, 
Scotland, on the iron trade in, 90. 
Scoresby (Rey. William) on a large magnetic 
machine, 15. 
Scrofulous tubercle, on the, with reference to 
its vascularity, 82. 
Sea, on extraordinary oscillations of the, 20. 
Sedgwick (the Rey. Prof.) on the geology of 
the neighbourhood of Cambridge, inclu- 
ding the formations between the chalk 
ree a and the great Bedford level, 
Seeds, on the influence of galvanic electricity 
on the germination of, 69. 
Sharp (William) on the ashes of wheat, 36. 
Sibson (Mr.) on an apparatus for delineating 
correctly the relative position and size of 
the viscera, either in the healthy condition 
or changed by disease, 85. 
Silurian rocks, on the occurrence of, at the 
villages of Ober and Neu Schmollen, in 
Silesia, 47. 
7 fossils, on the structure and relations of, 
—— rocks, on some important additions to 
the fossils of the, 57. 
Skeleton of animals, on the unity of organi- 
zation as exhibited in the, 62. 
Slate rocks, on the composition of, 38. 
Small-pox, on the statistics of, 90. 
Smith (James) on the subsidence of the land 
at Puzzuoli, 52. 
Snails, land, on the agency of, in forming 
hole and trackways in compact limestone, 
48. 
Solar spots, on the heat of the, 6. 
Solar rays, on the chemical changes produced 
by the, 29. 
Solly (Prof.) on Gutta Percha, a new variety 
of caoutchouc, 32. 
on the influence of galvanic electricity 
on the germination of seeds, 69. 
South Sea Islanders, on the habits and man- 
ners of the, 80. 
Spectrum, on the action of gases on the pris- 
matic, 28, 
Sphenonchus, on the supposed genus, 56. 
Spina bifida, on a case of, 86. 
Spineto (Marquis di) on the Egyptians and 
Americans, 80. 
Splittgerber (M.) on the manufacture of a 
coloured glass, 29. 
Spratt (Lieut.) on aremarkable phenomenon 
presented by the fossils in the freshwater 
tertiary of the island of Cos, 59. 
Star, on the projection of a, on the dark 
limb of the moon, 5. 
——,, on shooting, 20. 
Stark (Dr.) on the statistics of small-pox, 90. 
Statistics, 86. 
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