238 
lysis of common bone-ash, animal char- 
coal, &c., 68. 
Volcanic emanation, on the source of am- 
monia in, 71. 
Volcanoes of central Asia, on the, 75. 
Wakefield convict prison, influence of 
various circumstances in causing loss 
or gain in the weight of the prisoners 
in, 139. 
Walker (H.) on the results of free trade, 
201. 
Wallace (W.) on chloro-arsenious acid 
and some of its compounds, 69 ; on the 
carbonates of alumina, chromic oxide, 
and ferric oxide, 76. 
War, application of combustible com- 
ounds to be used in, 214. 
Ward (N. B.) on suburban gardens, 117 ; 
- on some practical results derivable from 
the study of botany, 118; on aquaria, 
132. 
Ward (W. 8.) on dry collodion processes, 
71. 
Warington (R.) on the source of ammonia 
in voleanic emanation, 71; on the mul- 
tiplication of Actiniz in aquaria, 133 ; 
on additions to the microscope, 143. 
Water, on the action of hard, upon lead, 
54; on some modern appliances for 
raising, 208. 
Water-bath, on an instrument for main- 
taining a, at constant temperatures, 71. 
Waterhouse (John) on an instrument for 
maintaining a water-bath at constant 
temperatures, 71. 
Water power, on the economy of, 212. 
Water-supply to great towns, on the, 198. 
Wavellite, on a new variety of pyro-elec- 
tric, 49. 
Weathered (The Hon. J.) on combined 
steam, 222. 
West (Tuffen) on the epidermal cells of 
the petals of plants, 119, 
West Riding, registry of deeds in the, 175. 
Whewell (Rev. W.), address by, to the 
Mathematical and Physical Section, 1 ; 
on his views respecting the nature and 
value of mathematical definitions, 3. 
Whitehouse (Wildman) on the submarine 
telegraph, 25. 
INDEX II. 
Whitney (A.) on the formation of a rail- 
way from the Atlantic to the Pacific 
ocean, through the British possessions 
of N. America, 154. 
Whitworth (C. F.) on recent improve- 
ments in railway signals, 223. 
Williams (R. P.) on an instrument for 
setting out curve lines, 228, 
Willich (C. M.) on a mode of construct- 
ing tables of squares and cubes, 6. 
Wilson (J. Spotswood) on the physical 
geography of N. W. Australia, 155 ; 
on the general and gradual desiccation 
of the earth and atmosphere, 70. 
Wolley (J.) on a fresh form of erystalliza- 
tion which takes place in the particles 
of fallen snow under intense cold, 40; 
on the arrangement of small stones on 
certain bare levels in Northern locali- 
ties, 224. 
Wood (J. P.), experiments on clay-slate, 
greenstone porphyry, and greenstone 
roofing slate, 92. 
Woollen manufactures of England, on 
the, 158. 
Worsted manufactures of Yorkshire, on 
the, 182. 
Wreck intelligencer, on a, 221. 
Wright (Thomas) on the opening of a 
sepulchral tumulus in east Yorkshire, 
156. 
Xyloids, on, 47. 
Yang-tse-Keang, on the, 152. 
Yorkshire, on the comparative geology of 
Hotham, near South Cave, in, 96; on 
the geological distribution of plants in 
some districts of, 115; on the mineral 
produce of, in 1857, 181; on the 
worsted manufactures of, 182; on some 
remarkable fossils of, 2238. 
Zoology, 119. 
Zoophytes, on three new species of ser- 
tularian, 126; on some new and inter- 
esting forms of British, 128. 
Zornlin (Miss Rosina) on heat, and on the 
indestructibility of elementary bodies, 
6. 
