226 
Thom (Mr.) on an improved rain- 
gauge, 210. 
on a water filter, 206. 
Thomson (Dr. Allen) on the structure 
of the gastro-intestinal mucous 
membrane, and of the gastric and 
intestinal glands, 149. 
Thomson (Dr. R. D.) on opacity of the 
cornea produced by sulphuric acid, 
164, 
on the tests for sulphuric acid 
when thrown on the person, 84. 
Thomson (Prof. T.) on the minerals 
in the neighbourhood of Glasgow, 
64. 
on chemical manufactures car- 
ried on in and near Glasgow, 58. 
Tornadoes, American, 40. 
Trepan, reproduction of bone after the 
operation of, 165. 
Trevandrum, meteorological observa- 
tions made at, 28. 
Uranile, preparation of, 74. 
Ure (Mr. A.) on the operation for 
squinting, 163. 
Urea, pre-existence of, in uric acid, 73. 
Uric acid, pre-existence of urea in, 73. 
Varrentrapp (Dr.), and Prof. Redten- 
bacher, on the constitution and pro- 
ducts of the distillation of fat bo- 
dies, 76. 
Veins, effects of air when injected 
into the, 157. 
Vignoles (Mr.) on the ceconomy of 
railways in respect of gradients, 193. 
on timber bridges in reference to 
railways, 195. 
Vision, axis of, line of visible direction 
along the, 9. 
Wadi el’ Arabah, in Syria, notes on 
the, 121. 
INDEX Il. 
Wales, state of education and crime in, 
185. 
Wallace (Mr.) on a smoke-protector, 
208. 
on extinguishing fire in steam- 
vessels, 194. 
Wallace (Wm.) on the properties of 
the catenary and curves of equili- 
bration, 190. 
Walsh (Mr.) on a mode of solving cu- 
bic equations, 55. 
Water-filter, 206. 
Water-wheel, on the turbine, 191. 
Watt (Mr.) on the comparative vital 
statistics of Edinburgh and Glas- 
gow, 178. 
Waves, theory of, 50. 
Wax, vegetable, on bleaching, 86. 
Whales, structure of, 131. 
Whitworth (Mr. Joseph) on producing 
true planes or surfaces on metals, 
192. 
Williams (Mr.) on the combustion of 
coal, and prevention of generation 
of smoke in furnaces, 199. 
Williams (Rev. David) on the older 
strata of Devonshire, 103. 
Wilson (James) on thesalmon fry, 133. 
on some Persian insects, 136. 
Wilson (Mr.) on the population of 
Scotland, 186. 
Yates (James) on the footsteps of ex- 
tinct animals observed in a quarry 
in Rathbone-street, Liverpool, 99. 
Yorkshire, plants and animals found 
in the sulphureous watersof, 143. 
Zoology, 128. 
Zoology and botany, true method of 
discovering the natural system in, 
128. 
THE END. 
PRINTED BY RICHARD AND JOHN E. TAYLOR, 
RED LION COURT, FLEET STREET. 
