1268 
Dredging Report, Frith of Clyde, 1856;—Rev. B. Powell, Report on Observations of 
Luminous Meteors, 1855-1856 ;-—Prof. Bunsen and Dr. H. E. Roscoe, Photochemical 
Researches ;—Rev. James Booth, on the Trigonometry of the Parabola, and the 
Geometrical Origin of Logarithms;—R. MacAndrew, Report 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 Explanations of these Phenomena, Part 1;—Dr. T. 
Wright, on the Stratigraphical Distribution of the Oolitic Echinodermata ; WwW. 
Fairbairn, on the Tensile Strength of Wrought Iron at various Temperatures ;—C. 
Atherton, on Mercantile Steam Transport Economy ;—J. 8. Bowerbank, on the Vital 
Powers of the Spongiadz ;—Report of a Committee upon the Experiments con- 
ducted at Stormontfield, near Perth, for the artificial propagation of Salmon ;—Pro- 
visional Report on the Measurement of Ships for Tonnage ;—On Typical Forms of 
Minerals, Plants and Animals for Museums;—J. Thomson, Interim Report on Pro- 
gress in Researches on the Measurement 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 consider the formation of a 
Catalogue of Philosophical Memoirs. 
Together with the Transactions of the Sections, Dr. Daubeny’s Address, and 
Recommendations of the Association and its Committees. 
PROCEEDINGS or tus TWENTY-SEVENTH MEETING, at 
Dublin, 1857, Published at 15s. 
ContENnts :—A. Cayley, Report on the recent progress of Theoretical Dynamics ; 
—Sixteenth 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 Measur- 
ing 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 Corn- 
—a gt 1Qt 1pt 1 
wall ;—Dr. G. Plarr, de quelques Transformations de la Somme =! pbs Caos 
le+ Iyt 4+ let41 
a étant entier négatif, et de quelques cas dans lesquels cette somme est exprimable 
par une combinaison de factorielles, la notation a‘|+!désignant le produit des 
facteurs a (a+1) (a+2) &e....(a+t -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 Transport Economy is affected by the Constructive Type of 
Shipping, as respects the Proportions of Length, Breadth, and Depth ;—J. 8. Bower- 
bank, Further Report on the Vitality of the Spongiade ;—Dr. John P. Hodges, on 
Flax ;—Major-General Sabine, Report of the Committee on the Magnetic Survey of 
Great Britain ;—Rey. Baden Powell, Report on Observations of Luminous Meteors, 
1856-57 ;—C. Vignoles, on the Adaptation of Suspension Bridges to sustain the 
passage of Railway Trains;—Prof. W. A. Miller, on Electro-Chemistry ;—John 
Simpson, 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, on the Algebraic Couple; and on the Equivalents of Indetermi- 
nate Expressions;—Thomas Grubb, Report on the Improvement of Telescope and 
Equatorial Mountings ;—Prof. 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 Suspension Chains, and a Comparison 
of the Weight of Metal in Ordinary and Suspension Girders, to produce equal de- 
flections with a given load ;—J. Park Harrison, Evidences of Lunar Influence on 
Temperature ;—Report on the Animal and Vegetable Products imported into Liver- 
