_ PROCEEDINGS or tote TWENTY-SEVENTH MEETING, at Dub. 
lin, 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 
—Hqilt1 pelt pel+1 : : hon! 
4 ja# ya atv a étant entier négatif, et de quelques cas dans lesquels cette somme 
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 ; 
—dJohn 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 Hargrave, 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, Prof. Owen’s Address, and Recommenda- 
tions of the Association and its Commitees. ; 
