144 
Thermometer, on the formula for the wet- 
bulb, 31. 
Thompson (James) on a jet-pump, or ap- 
paratus for drawing up water by the 
power of ajet, 130; onsome properties 
of whirling fluids, with their applica- 
tion in improving the action of blowing 
fans, centrifugal pumps and certain 
kinds of turbines, 130. 
Thomson (Prof. W.) on the thermal effects 
of air rushing through small apertures, 
16; on the sources of heat generated 
by the galvanic battery, #; on the 
mutual attraction between two electri- 
fied spherical conductors, 17 ; on cer- 
tain magnetic curves; with applica- 
tions to problems in the theories of 
heat, electricity and fluid motion, 18; 
on the equilibrium of elongated masses 
of ferromagnetic substance in uniform 
and varied fields of force, 2b. 
Thomson (W. T. C.) on the character of 
the sertularian zoophytes, 78. 
Townsend (R. W.) on an instrument for 
exhibiting the colours of liquid by trans- 
mitted light, 20. 
Trifolium repens, on an anomaly of the, 
66. 
Triticum, on the transmutation of A.gilops 
into, 68. 
Turbines, on some properties of whirling 
fluids, with their application in im- 
proving the action of, 130. 
Twining (Henry) on an instrument for 
drawing, 32; on some peculiarities of 
granite in certain points of the Pyre- 
nees, 62. 
Tyndall (John) on molecular action, 20; 
on Poisson’s theoretic anticipation of 
magnecrystallic action, ib. 
Universe, on the re-concentration of the 
mechanical energy of the, 12. 
Vallini (Dr.) on a skeleton of Mastodon 
angustidens found near Montopoli, 62. 
Van de Velde (Chevalier), late explora- 
tions in Syria and Palestine, 114. 
Vandey (Consul) on the Upper Nile, 114. 
Vapours, on the gradient of density in 
saturated, 2. 
Verneuil (M. De) on the geological struc- 
ture of Spain, 62, 
Vertebrz, on the homologies of the cra- 
nial, 78. 
Vicary (Major) on the geology of a por- 
tion of the Himalaya mountains, 62. 
Vision, on a case of, without retina, 3; 
on a peculiarity of, 11. 

INDEX II. 
Wales, North, on the lowest fossiliferous 
beds of, 56. 
Walfisch Bay, expedition under Mr. F. 
Galton to the east of, 110. 
Walker (Charles V.) on telegraphic time 
eles 131; on graphite batteries, 
32. 
Wallsend colliery, on the evolution of gas 
in, 124. 
Ward (W. 8.) on the production of cold 
by mechanical means, 131. 
Water, on the supposed action of, in geo- 
logical formations, 61; on a micro- 
scopic alga, as a cause of the phzno- 
menon of the coloration of large masses 
of, 64; on the discharge of, from actual 
experiment, 124, 
Waterston (J. J.) on the gradient of den- 
sity in saturated vapours, and its deve- 
lopment as a physical relation between 
bodies of definite chemical constitu- 
tion, 2. 
Watts (J. K.), aurora borealis observed at 
St. Ives, Huntingdonshire, 32; on the 
geology of St. Ives, and its neighbour- 
hood, 63. 
Waves, 21. 
Webster (Thomas) on the new patent 
law, 132. 
West Indies?, are there any impediments 
to the competition of free labour with 
slave labour in the, 117. 
Wet-bulb thermometer, on the formula for 
the, 31. 
Whytlaw (Matthew) on a new method of 
scutching the New Zealand flax, 132. 
Wilde (W. A.), statistics of the deaf and 
dumb in Ireland, 121; on the early 
bills of mortality at Dublin, 121. 
Woodhouse (Alfred J.) on the mould for 
casting conical bullets, 132. 
Woods (Dr. T.) on chemical combina- 
tion; and the amount of heat produced 
by the combination of several metals 
with oxygen, 39; on the combination 
of metals with oxygen, 40. 
Young (R.) on the Eskers of the central 
part of Ireland, 63. 
Zanzibar, on a recent journey across 
Africa from, to Angola, 110; on the 
climate of, 113. 
Zoological notices by the Prince of Ca- 
nino, 72. 
Zoology, 70. 
Zoophytes, on the character of the sertu- 
larian, 78. 

