259 
on the Marine Testaceous Mollusca of the North-east Atlantic and Neighbouring Seas, and 
the physical conditions affecting their development ;—P. P. Carpenter, Report on the present 
state of our knowledge with regard to the Mollusca of the West Coast of North America ;— 
T. C. Eyton, Abstract of First Report on the Oyster Beds and Oysters of the British Shores; 
—Prof. Phillips, Report on Cleavage and Foliation in Rocks, and on the Theoretical Expla- 
nations of these Phenomena: Part I. ;—-Dr. T. Wright on the Stratigraphical Distribution of 
the Oolitic Echinodermata ;—W. Fairbairn, on the Tensile Strength of Wrought Iron at various 
Temperatures ;—C, Atherton, on Mercantile Steam Transport Economy ;—J. S. Bowerbank, on 
the Vital Powers of the Spongiade;—Report of a Committee upon the Experiments conducted 
at Stormontfield, near Perth, for the artificial propagation of Salmon ;—Provisional Report on 
the Measurement of Ships for Tonnage ;—On Typical Forms of Minerals, Plants and Animals 
for Museums ;—J. Thomson, Interim Report on Progress in Researches on the Measure- 
ment of Water by Weir Boards;—-R. Mallet, on Observations with the Seismometer ;—A. 
Cayley, on the Progress of Theoretical Dynamics ;—Report of a Committee appointed to con~ 
sider the formation of a Catalogue of Philosophical Memoirs. 
Together with the Transactions of the Sections, Dr. Daubeny’s Address, and Recom- 
mendations of the Association and its Committees. 
PROCEEDINGS or tuz TWENTY-SEVENTH MEETING, at 
Dublin, 1857, Published at 15s. 
ConTEnTs :—A. Cayley, Report on the Recent Progress of Theoretical Dynamics ;—Six- 
teenth and final Report of Committee on Experiments on the Growth and Vitality of Seeds ; 
—James Oldham, C.E., continuation of Report on Steam Navigation at Hull;—Report of a 
Committee on the Defects of the present methods of Measuring and Registering the Tonnage 
of Shipping, as also of Marine Engine-Power, and to frame more perfect rules, in order that 
a correct and uniform principle may be adopted to estimate the Actual Carrying Capabilities 
and Working-Power of Steam Ships;—Robert Were Fox, Report on the Temperature of 
some Deep Mines in Cornwall;—Dr. G. Plarr, De quelques Transformations de la Somme 
—% qt|+1gt|+1gél+1 
0 Wetl yet ft? 
est exprimable par une combinaison de factorielles, la notation atl+1 désignant le produit des 
t facteurs a (a+1) (a+2) &c....(a+¢—1);—G. Dickie, M.D., Report on the Marine Zoology 
of Strangford Lough, County Down, and corresponding part of the Irish Channel ;—Charles 
Atherton, Suggestions for Statistical Inquiry into the extent to which Mercantile Steam Trans- 
port Economy is affected by the Constructive Type of Shipping, as respects the Proportions of 
Length, Breadth, and Depth ;—J. S. Bowerbank, Further Report on the Vitality of the Spon- 
giadz ;—John P. Hodges, M.D., on Flax ;—Major-General Sabine, Report of the Committee 
on the Magnetic Survey of Great Britain;—Rev. Baden Powell, Report on Observations of 
Luminous Meteors, 1856-57 ;—C. Vignoles, C.E., on the Adaptation of Suspension Bridges to 
sustain the passage of Railway Trains ;—Professor W, A. Miller, M.D., on Electro-Chemistry ; 
—John Simpson, R.N., Results of Thermometrical Observations made at the ‘ Plover’s’ 
Wintering-place, Point Barrow, latitude 71° 21’ N., long. 156° 17’ W., in 1852-54 ;—Charles 
James Hargreave, LL.D., on the Algebraic Couple; and on the Equivalents of Indeterminate 
Expressions;—Thomas Grubb, Report on the Improvement of Telescope and Equatorial 
Mountings ;—Professor James Buckman, Report on the Experimental Plots in the Botanical 
Garden of the Royal Agricultural College at Cirencester ;—William Fairbairn,on the Resistance 
of Tubes to Collapse ;—George C. Hyndman, Report of the Proceedings of the Belfast Dredging 
Committee ;—Peter W. Barlow, on the Mechanical Effect of combining Girders and Suspen- 
sion Chains, and a Comparison of the Weight of Metal in Ordinary and Suspension Girders, 
to produce equal deflections with a given load ;—J. Park Harrison, M.A., Evidences of Lunar 
Influence on Temperature ;—Report on the Animal and Vegetable Products imported into 
Liverpool from the year 1851 to 1855 (inclusive) ;—Andrew Henderson, Report on the Sta~ 
tistics of Life-boats and Fishing-boats on the Coasts*of the United Kingdom. 
Together with the Transactions of the Sections, Rev. H. Lloyd’s Address, and Recommen- 
dations of the Association and its Committees. 
PROCEEDINGS or tut TWENTY-EIGHTH MEETING, at Leeds, 
September 1858, Published at 20s. 
ConTENTs:—R. Mallet, Fourth Report upon the Facts and Theory of Earthquake Phe- 
nomena ;— Rev. Prof. Powell, Report on Observations of Luminous Meteors, 1857-58 ;—R. H. 
Meade, on some Points in the Anatomy of the Araneidea or true Spiders, especially on the 
internal structure of their Spinning Organs ;—W. Fairbairn, Report of the Committee on the 
Patent Laws ;—S. Eddy, on the lead Mining Districts of Yorkshire ;—W. Fairbairn, on the 
a étant entier négatif, et de quelques cas dans lesquels cette somme 
