[ iv ] 
XXIV. Further Experiments with a new Register-Pyrometer for Measuring the 
Expansion of Solids. By J. Frederick Daniell, Esq. F.R.S. Professor 
of Chemistry in King's College, London page 443 
XXV. Experiments on the Length of the Seconds Pendulum at the Royal 
Observatory of Greenwich. By Captain Edward Sabine, of the Royal 
Regiment of Artillery, F.R.S 459 
XXVI. On the Sources and Nature of the Powers on which the Circulation of 
the Blood depends. By A. P. W. Philip, M.D. F.R.S. L. 8$ E. . 489 
XXVII. On the Influence of Screens in arresting the Progress of Magnetic 
Action. By William Snow Harris, Esq. F.R.S 497 
XXVIII. On the power of masses of Iron to controul the Attractive Force of a 
Magnet. By William Snow Harris, Esq. F.R.S 501 
Appendix. 
Meteorological Journal, hept at the Apartments of the Royal Society, by order 
of the President and Council. 
