Testacea, list of, fouud in dredged sand 
from the Turbot bank, near Belfast 
Bay, 287. 
Thomson (Prof. James) report on experi- 
ments on the measurement of water by 
triangular notches in weir boards, 181. 
INDEX II, 
Vaughan (Daniel) on meteorites, 152. 
Vignoles (C.), appendix to his paper on 
the adaptation of suspension bridges 
to sustain the passage of railway trains, 
293, 
Water, on the measurement of, by tri- 
angular notches in weir boards, 181. 
227 
Weir boards, on experiments on the 
measurement of water by triangular 
notches in, 181. 
Wright (E. Percival), report on the ma- 
rine fauna of the south and west 
coasts of Ireland, 176. 
Wright (Henry) on shipping statistics, 
239. 
Yorkshire, on the lead-mining districts 
of, 167. 
Zoantharia, list of, from the coast of 
Treland, 180. 
INDEX II. 
TO 
MISCELLANEOUS COMMUNICATIONS TO THE 
SECTIONS. 
Acip, new method for the quantitative 
estimation of nitric, 64; new method 
of determining the quantity of carbonic, 
contained in the air, 66; on chloro- 
arsenious, and some of its compounds, 
Actiniz, on the multiplication of, in 
aquaria, 133 
-Actinism, on the estimation of, 47. 
Adams (W. Bridges) on a new method of 
constructing the permanent way and 
wheels of railways, 203. 
Air, on the construction of a portable 
self-registering anemometer for record~ 
ing the direction and amount of hori- 
_ zontal motion of the, 38. 
Ajire, valley of the, on the superficial de- 
posits of the, 111. 
Alarms in passenger trains, on a plan for 
giving, 219. 
in Chinese Tartary, notes of a 
__ journey through parts of the, 144, 
Alder (Joshua) on three new species of 
Sertularian Zoophytes, 126. 
Alkaline waters of Leeds, on the, 51. 
Allman (Prof.) on the reproductive organs 
of Sertularia tamarisea, 119. 
Alloys, on the expansion of, 46. 
Alumina, on the carbonates of, 69, 
Aluminium, on the production of a frosted 
surface on articles made of, 56; on the 
practical application of, 66. 
America, British North, physical geogra- 
phy of the country examined by the 
expedition exploring the S. W. regions 
of, 153; on the formation of a railway 
from the Atlantic to the Pacific Ocean, 
through, 154; on the discovery of 
strata of supposed Permian age, in the 
interior of, 224. 
Amethyst plates, on the use of, in expe- 
riments on the polarization of light, 13. 
Ammonia, animal, 65; on the source of, 
in voleanic emanation, 71. 
Amoor river, on the Russo-Chinese fron- 
tier and the, 147. 
Anderson (Rev. Dr.) on the fossil fishes 
and yellow sandstone, 74. 
Anemometer, on the construction of a 
portabie self-registering, for perording 
15 
