ii 
CONTENTS. 
Art. XL Account of the measures adopted for pulling down 
the Ruins caused by the late great Fires at Edin- 
burgh, on 15th, l6th, and 17th November 1824, 
Drawn up by a Naval Officer present. With En- 
gravings, - - - 93 
XII. Memoir on the Milk of the Cow-Tree. By Ma- 
riano DE Rivero, and T. Boussingault, - 97 
XIII. A Table, containing the Results of some Observa- 
tions made by late Navigators on the Tempera- 
ture of the Ocean, at various depths below its 
surface, - - - 103 
XIV. On the Laws of Electro-Magnetic Action, as de- 
pending on the Length and Dimensions of the 
^ conducting Wire, and on the question. Whether 
Electrical Phenomena are due to the transmis- 
sion of a single or of a compound fluid? By 
Peter Barlow, Esq. F.R.S. - - 105 
Table of Experimental Results, shewing the Deviation 
of Compass-Needles at different Distances, and with 
different Lengths of Conducting Wire, - 108 
Mean Deflection in the preceding Table, reduced to one 
Standard Power of the Battery, - 110 
Comparison of Computed and Observed Deflections, 111 
Experiments to ascertain the Conducting Power of dif- 
ferent Wires, as depending upon their Thicknesses 
or Diameters, - - - 112 
Experiments on the relative Electro-Magnetic Effect 
of different sized Copper- Wires, - 113 
Experiments on the relative Electro-Magnetic Effect 
of different sized Brass-Wires, - - ib, 
XV. Notice regarding the different Character of the 
Waves of the Western Ocean, and of the British 
Seas, - - - 114 
XVI. Remarks on the Modern Strata. By the Rev. John 
Fleming, D.D. F.R.S.E. and M.W.S., Minister 
ofFlisk, - - - 116 
XVII. On the Geographic Distribution of the Gramineae; 
with coloured Maps. By Professor Schouw, 128 
XVIII. A Memoir on the Bag or Bladder which is occasion- 
ally protruded from the mouth of the Dromedary. 
By Dr Paolo Savi, Professor of Natural History 
in the University of Pisa, - - 
