284 
INDEX. 
R. 
Roccella thictoria, from South America, 64 ; from the Cape of Good Hope, 69. 
■ Montagnei, 72. 
Roccellinin, 71. 
S. 
SiBSON (Francis, Esq.). On the Blow-hole of the Porpoise, 117. 
Spectrum, on the Theory of certain Bands seen in the, 227. 
Stems (of Plants), on the inclination of, towards the light, 257. 
Stenhouse (John, Esq.). Examination of the proximate principles of some of the Lichens, 63. 
Stokes (G. G., Esq.). On the Theory of certain Bands seen in the Spectrum, 227. 
T. 
Tendrils (of Plants), on the curling-up of, 253. 
Tides of the West Coast of America (South), 14. West Coast of America (North), 15. Isles of 
the Pacific (South), 17. (North), ibid. Central Pacific, 18. Australia, 19. 
Tides of the Irish Sea, Report of Observations made upon the, and upon the great similarity of 
Tidal phenomena of the Irish and English Channels, and the importance of extending the 
experiments round the Land’s End and up the English Channel, 105. 
Tides, Researches on the . — Thirteenth Series. On the Tides of the Pacific, and on the Diurnal 
Inequality, 1. 
U. 
Urine, on a new substance occurring in the, 55. Analysis of this substance, 59. 
Usnic Acid, 88. 
W. 
Wax, an investigation on the chemical nature of. I. On Cerotic Acid, a new acid contained 
in Bees’-wax, 147. Cerotic Acid, 149. Cerotic Ether, 152. Chlor-cerotic Acid, 153. Chlor- 
cerotic Ether, 154. Distillation of Cerotic Acid, ibid. 
. II. On the chemical nature of a Wax from China, 159. Cerotin, 160. Sulphate of the 
oxide of Cerotyle, 162. Chlor-cerotic Aldehyde — Chlor-cerotal, 163. Cerotic Acid from the 
saponification of the wax, 164. Distillation of Cerotin, 166. Distillation of Chinese Wax, 
ibid. Ceroten, 167. Chlor-ceroten, 168. 
Whewell (The Rev. William, D.D.). Researches on the Tides. Thirteenth Series, 1. 
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