ii CONTENTS. 
Art. X. Account of the Great Cave of Gailenreuth in Franco- 
nia, and of the Cave of Kirk dale in Yorkshire. With 
a Plate,— 
Description of the Cave at Gailenreuth, 
Description of tjie Cave at Kirkdale in Y orkshire, 
XI. Some Experiments on the Changes which take place 
in the Fixed Principles of the Egg during Incuba- 
tion. By William Prout, M. D. F. R. S. 
XII. Notice of the Attempts to reach the Sea by Macken- 
zie’s River, since the Expedition of Sir Alexander 
Mackenzie, - 
XIII. On the Magnetism of the Brass- work of Surveying 
Instruments. By Mr J. Bywater. In a Letter to 
Dr Traill. Communicated by Dr Traill, 
XIV. Account of the Great Waterfalls of Rewah, 
XV. Detail of Experiments on the Ignition of Wires by 
the Galvanic Battery. By John Murray, F. L. S. 
M. W. S. &c. Communicated by the Author, 
XVI. Observations on the Tutenag and White Copper of 
China. By Sir T homas Dick Lauder, Bart. F. R. S. E. 
XVII. On the Fresh- water Formations of Italy, posterior to 
the Coarse Limestone. By Alexander Brong- 
niart. Member of the Institute of France, &c. &c. 
XVIII. On the Methodical and Natural Distribution of the 
different Systems of Crystallization. In a Letter 
from M. Weiss, Professor of Mineralogy in the 
University of Berlin, to Dr Brewster, 
XIX. On the Revolutions which have taken place in fhe 
Animal Kingdom, as these are indicated by Geo- 
gnosy. By Dr Fleming, 
XX. On the Theoretical Principles of the Machinery for 
Calculating Tables. In a Letter from Charles 
Babbage, Esq. F.R.S. L. & E. to Dr Brewster, 
XXL Account of Mr Barton’s Method of making the Iris 
Metal Ornaments, or of ornamenting Steel, and 
other Metals, with the Prismatic Colours, 
XXII. Journal of a Tour to the Coast of the Adriatic Sea, 
and to the Mountains of Carniola, Carinthia, Tyrol, 
Saltzburg and Bohemia, undertaken chiefly with a 
view to the Botany and Entomology of those coun- 
tries. By Dr David Henry Hoppe and Dr Hen- 
ry Hornschuch. Containing the Excursion from 
the Fichtelberg to I stria, - - 
56 
58 
63 
77 
81 
83 
88 
9L 
m 
103 
110 
122 
128 
132 
