INDEX. 
283 
Jones (T. Wharton, Esq.). Microscopical examination of the contents of the Hepatic Ducts, 
with conclusions founded thereon as to the physiological signification of the cells of Hepatic 
Parenchyma, and as to their anatomical relation to the radicals of the Hepatic Ducts, 277. 
K. 
Keely (Professor George W.). Determinations of the Magnetic Inclination and Force in the 
British Provinces of Nova Scotia and New’ Brunswick in the Summer of 1847, 203. 
L. 
Leaves (of Plants), on the direction of, 264. 
Lichens, on the proximate principles of some of the, 63. South American variety of Roccella 
tinctoria, 64. Cape of Good Hope variety, 69. Roccella Montagneij 112. Evernia Pru- 
nastri, 79. 
Light, on the inclination of the stems of plants towards, 257. Action of, on exhalation, 270. Action 
of, on the decomposition of carbonic acid, 272. 
Light, on a new Case of the Interference of, 213. 
M. 
Macaire (Professor). On the Direction assumed by Plants, 253. 
Magnetic Inclination and Force, determinations of the, in the British Provinces of Nova Scotia 
and New Brunswick in the Summer of 1847, 203. 
Mantell (Gideon Algernon, Esq.). Observations on some Belemnites and other Fossil Remains 
of Cephalopoda, discovered by Mr. R. N. Mantell, C.E., in the Oxford Clay near Trowbridge, 
in Wiltshire, 171. 
On the Structure of the Jaws and Teeth of the Iguano- 
don, 183. 
Meteorological Observations, on the corrections to be applied to the Monthly Means of, taken at 
any hour, to convert them into Mean Monthly values, 125. 
O. 
Orcin, on, and its preparation, 85. Pseudo-, 76. 
Orsellic Acid, 64, 69. Orsellisic acid, 66. Orsellisic ether, 68. 
P. 
Pacific, on the Tides of the, 1. Materials for a Tide-Map of the, 10. 
Plants, on the direction assumed by, 253. § 1. On the curling-up of Tendrils, ibid. § 2. On 
the inclination of Stems towards light, 257. § 3. On the direction of Leaves, 264. 
§ 4 Action of Light on Exhalation, 270. § 5. Action of Light on the decomposition of 
carbonic acid, 272. 
Powell (The Rev. Baden). On a new Case of the Interference of Light, 213. 
Porpoise, on the Blow-hole of the, 117. 
2 p 
MDCCCXLVIII. 
