216 
Sutherland (Kenneth Leith), observations 
on Vancouver island, 153. 
Sydney, New South Wales, on the census 
of, 167. 
Symonds (Rev. W. 8.) on a fossil of the 
Severn drift, 93; on a new species of 
Eurypterus from the old red sandstone 
of Herefordshire, 2b. 
Symons (J. C.) on criminal statistics, 168, 
Tangent wheels, on, 186. 
Tartt (W. M.) on the criminal statistics 
of this and certain foreign countries, 
168. 
Taylor's theorem, on the interpretation of 
certain symbolic formule and exten- 
sions of, 3. 
Telegraph, on the effects of induction in 
long submarine lines of, 21; on a uni- 
form reckoning of time in connexion 
with the, 26. 
Telegraph cable, mathematical investiga- 
tion of the proportion between the 
length required for an electric, and its 
specific gravity, 11; on the submarine 
electric, 189; on machinery for laying 
submarine, 189, 199. 
Telescope speculum of silvered glass, on 
a, 6. 
Telescopes, on improvements in the opti- 
cal details of reflecting, 8. 
Temperature, on the cause of the mild 
winter, of the British islands, 144. 
Teratology, contributions to vegetable, 
97. 
Tertiary clay of Ballymacadam, on the, 
4 
Thames water, on the condition of, as 
affected by London sewage, 44. 
Thompson (W.) on dredging in Weymouth 
Bay, 108. 
Thompson (Prof. Wyville) on the repro- 
ductive Zooids of Comatula rosacea, 
108. 
Thomson (C.) on finding the time by ob- 
serving circumpolar stars in the same 
vertical, 25. 
Thomson (James) on the grand currents 
of atmospheric circulation, 38; on the 
plasticity of ice, 39. 
Thomson (Prof. William) on Mr. White- 
house’s relay and induction coils in 
action on short circuit, 21; on the 
effects of induction in long submarine 
lines of telegraph, #b.; on machinery 
for laying submarine telegraph cables, 
199. 
Threlkeld (Rev. J.) on the present con- 
dition of the natives of Australia, 154. 
Tibet, on some of the animals of, 106; 
INDEX II. 
on the route pursued by the Messrs, 
Schlagintweit in, 149. 
Tidal action, secular variations in lunar 
and terrestrial motion from the influ- 
ence of, 40. 
Titanium, ammonio-iodide of, 55. 
Tralee, on the geology of the neighbour- 
hood of, 65. 
Trap district, Valentia, 75. 
Tree, remarkable result of an experiment 
upon a fruit-bearing, 100. 
Trees, on-the importance of a thorough 
understanding of the root principle in 
the cultivation of, 98. 
Triassic shore, on the records of a, 68. 
Tuomey’s (the late Prof.) geological map 
of Alabama, 78. 
Turf-bogs, on the plants which form the 
principal part of the Irish, 97. 
Turkistan, on the routes pursued by the 
Messrs. Schlagintweit in, 149, 
Tuscany, on the recent advances of palz- 
ontological discovery in, 79. 
United States, on certain electrical phe- 
nomena in the, 32. 
Urea as a direct source of nitrogen to 
vegetation, on, 44. 
Uria troile and U. lacrymans, on the spe- 
cific distinctions of, 105. 
Vaccine virus, on preserving the, in 
glycerine, 115. 
Valentia trap district, on the, 75. 
Values, on the principle of mean, 3. 
Vancouver island, on, 153. 
Vaughan (D.), secular variations in lunar 
and terrestrial motion from the influ- 
ence of tidal action, 40; on the light 
of suns, meteors, and temporary stars, 
42, 
Vegetation, on urea as a direct source of 
nitrogen to, 44. 
Vessels, on the want of facts respecting 
the performance of, at sea, 187. 
Villages, equitable, in America, 170. 
Viscera, abdominal, on the valvular ap- 
paratus connected with the vascular 
system of certain, 115. 
Voelcker (Prof.) on the composition of 
Norwegian apatite, 59; on the pro- 
portion of organic phosphorus in le- 
gumine, 60; on the methods of anas 
lysing the superphosphates, 2b. 
Walsh (Richard H.) on equitable villages 
in America, 170. 
Ward (W. Sykes) on the preservation of 
albuminized collodion plates, 61. 
Water, on the effect of the resistance of, 
