138 
Ball (R.), new dredge for natural history pur- 
poses, 72. 
Balloons, on observations of the barometer 
and thermometer made during several as- 
cents in, 29. 
Barometer, on observations of the, made 
during several ascents in balloons, 29. 
Barrande (M.) on the metamorphosis of cer- 
tain Trilobites, 58. 
Bate (C. Spence) on some Tubicole, 72. 
on the boring of marine animals, 73. 
Berkeley’s theory of vision, on, 6. 
Beroé Cucumis, and the genera or species of 
Ciliograda which have been founded upon 
it, 76: 
Birt (W. R.) on shooting stars, 15. 
Blair (Dr.) on some remarkable priniitive 
monuments existing at or near Carnac (Brit- 
tany), and on the discrimination of races by 
their local and fixed monuments, 82. 
Blood, on the course of the, in the circulation 
of the human feetus in the normal develop- 
ment, compared with the Acardian, Rep- 
tilian, and Ichthic circulation, 78. 
Blunt (Henry) on a model of the moon’s sur- 
face, 1. 
Boilers of steam-engines with water, on a 
method of supplying the, 132. 
“ Bone-bed” of Aust Cliff on the Severn, on 
a large cylindrical bone found in the, 67. 
Bontemps (G.) on some modifications in the 
colouring of glass by metallic oxides, 34, 
Botany, 68. 
Bracebridge (C. Holte) on the county of War- 
wick asylum for juvenile offenders, 87. 
Brass, on magnetized, 29. 
Brassica oleracea, on some abnormal forms of 
the fruit of, 71. 
Brewster (Sir David) on a binocular camera, 5. 
on the photographic camera, 5. 
on a new form of lenses, and their ap- 
plication to the construction of two tele- 
scopes or microscopes of exactly equal op- 
tical power, 6. 
, notice of experiments on circular cry- 
stals, 6. 
, additional observations on Berkeley’s 
theory of vision, 6. 
» an account of a new stereoscope, 6, 
Britannia bridge, on the, 111. 
British Isles, on the temperature of the, 21. 
Brooke (C.) on an improvement in the pre- 
paration of photographic paper, for the 
purposes of automatic registration, in which 
a long-continued action is necessary, 34. 
Brougham (Lord) on the inflexion of light, 7. 
Broun (J. A.) on the diurnal variation of 
magnetic declination and the annual va- 
riation of magnetic force, 8. 
Brunton (William) on a machine for venti- 
lating coal mines, 111. 
Bryarea scolopendra, 72. 
Bryozoa, on the nervous system and certain 
other points in the anatomy of the, 71. 
Bryozoon, on a new freshwater, 72. 






INDEX Il. > 
Buckman (Prof.) on fairy rings, and on some 
of the edible fungi by which they are 
caused, 70. 
Buist (George),meteorological phenomena ob- 
served in India from Jan- to May 1849, 15. 
Bunsen (Chevalier) on Prussian statistics, 86. 
Calculating instrument, on a, 118. _ 
California, on the discovery of gold in, 94. 
Camera, description of a binocular, 5. 
, improvement on the photographic, 5. 
Canino (the Prince of) on the characters 
which distinguish the little blue magpie of 
Spain from that of Siberia, 75. 
Carnac (Britanny} on some remarkable pri- 
mitive monuments existing at or near, 82. 
Carrot, on the varieties of the wild, 70. 
Carte (A. G.) on the use of rockets in effect- 
ing a communication with stranded vessels, 
114. 
Centrifugal pump, on a, 110. 
Channel Islands, on the geology of the, 49. 
Charlemont, Staffordshire, on a continued 
spontaneous evolution of gas at the village 
of, 38. 
Charlesworth(E.) onsomenew species of Tes- 
tacea from the Hampshire tertiary beds, 52. 
Chemistry, 34. 
Chevallier (Rev. Prof.) on a rainbow seen 
after actual sunset, 16. 
Cholera, on the application of statistics to the 
investigation of the causes and prevention 
of, 86. 
Christiania, meteorological observations made 
at, 18. - 
Cistern, on Kosman’s patent, as a sanitary 
machine, 134. 
Claudet (A.) on the theory of the principal 
phenomena of photography in the Da- 
guerreotype process, 35. 
Cloth, incombustible, 33. 
Coal-field, South Staffordshire, on the rela- 
tion between the new red sandstone, the 
coal-measures, and the Silurian rocks of 
the, 55. 
Coal mines, on a machine for ventilating, 111. 
, on Gordon’s plan of ventilating, 125. 
Comets, on, the application of graphical me- 
thods to the determination of the pertur- 
bations of, 1. 
Comet, on De Vico’s, 2. 
Uopper containing phosphorus, on, 39. _ 
, on the corrosive action of sea-water on 
some varieties of, 39. 
Cordylophora lacustris, on the reproductive 
system of, 72. 
Corn, on the fluctuations of the annual sup- 
ply, and average price of, in France, 87. 
Cornish coasts, on the luminosity of the sea 
on the, 80. 
Cornwall, on the fossil geology of, 63. 
Craufurd (J.) on the alphabet of the Indian 
archipelago, 83. 
on the oriental words adopted in En- 
glish, 84. 





