190 
INDEX II. 
Valpy (R.), progress and direction of Bri¬ 
tish exports, and the influence thereon 
of free trade and gold, H5. 
Vapours, on formula: for the maximum 
pressure and latent heat of, 58. 
Varley (C. F.) on improvements in sub¬ 
marine and subterranean telegraph 
communication, 17. 
Varley (Cornelius) on natural occurrences 
that impair the vision of good tele¬ 
scopes, 48. 
Vaughan (Daniel) on meteoric astronomy, 
Vegetable remains in the lower Silurians 
of the south of Scotland, on the, 88. 
Venn (the Her. H.), letter from tho Rev. 
J. Rebnrann to, from Kisnludini, 12.1. 
Virginia, West, on coni deposits in, 78. 
Vivaria, marine, on the artificial prepara¬ 
tion of sea-water for, 77. 
Volcanic action, on the production of 
borncic acid and ammonia by, 70. 
Voltaic battery, on the triplication of the, 
to the ignition of gunpowder, 18. 
Wales, North, on the thickness of tho ice 
of the ancient glnricra of, 01. 
Wnrd (Cant.) on the application of the 
voltaic battery to the ignition of gun¬ 
powder, 18. 
Warington (It.) on the production of bo- 
racic acid and ammonia by volcanic 
action, 70; on the cfleet of coloured 
media ««» the growth of red Alga-, 77 ; 
on the influence of coloured glass on 
the growth of plants insea-water, 103; 
observations made in small aquaria, in 
which the balance between the animal 
and vegetable organisms was pernm- 
nently maintained, llfi. 
Washing machine, on n new, 140. 
Water, report of experiments on the fric¬ 
tion of discs in, 163. 
Water-lilies, on the arrangement of the 
air-can.il* in the, 102. 
Watersten (J. J.) on a method of com- 1 
puting the absolute volume of the ulti¬ 
mate particles of liquids, 63. 
Walts (J. King) on mironc bortalci ob¬ 
served at St. Ives, 47. 
Wenham (F.) on the application of pho¬ 
tography to the delineation of micro¬ 
scopic objects, 116. 
Whcwell (Rev. W.) on Mr. Superinten¬ 
dent Bnche’s tide observations, 28. 
Whitty (Prof. J.), on the Silurian anthra¬ 
cite of Cavan, discovered by, 95. 
Wicklow, on the one-inch map of the 
northern port of the county, geologi¬ 
cally coloured, 87. 
Widdringtou (Copt.) on a supposed new 
species of Folia, 113. 
Williamson (Prof. W. C.) on the restora¬ 
tion of Zarnitcs gigas from the lower 
red sandstone and shale of the York¬ 
shire coast, 103; on the British species 
«f Fornminifera, 113. 
Wilson (Prof) on a new arithmometer, 1; 
on Babinct's honmlogrnphic maps, 2. 
Wilson (Dr. G.) on the artificial prepara¬ 
tion of sea-water for marine vivaria, 77. 
Wilson (G. S.) on an Australian expedi¬ 
tion, 125. 
Wire-rope, on the origin of, 162. 
Wires,on magneto, electricity and under¬ 
ground, 8. 
Wright (T.) on the early ethnology of 
Britain, 110; on some remains of an 
curlv people in the south-eastern corner 
of Y orkshire, 130. 
Wrightson (Francis) on the sewerage of 
manufacturing towns, 77. 
Yates (James) on Stangerin paradoxa, 
104; on n method of substituting: francs 
and centimes for the present English 
metallic currency, 148. 
Yates (J. B.) on the estuary of the river 
Mersey, and the hazardous and uncer¬ 
tain approaches to the port of Liverpool, 
r 126. 
Yorkshire, on Zamites gigas from the 
lower sandstone and shale of the coast, 
103; on some remains of an early 
people iu the south-eastern corner of, 
130; statistics, ib. 
Zamites gigas from the lower sandstone 
and shale of the Y'orkshire coast, on, 
103. 
Zinc, on the chemical examination of 
some alloys of copper and, 67. 
Zoues, on the distribution of rain in the 
temperate, 28. 
Zoology, 105. 
