THE 
SCIENTIFIC PROCEEDINGS 
OF THE 
ROYAL DUBLIN SOCIETY. 
Vol. IX. (N.8.) FEBRUARY, 1903. Part 9. 
CONTENTS. 
XLIV.—On Haze, Dry Fog, and Hail. By W. N. Harrtey, D.Sc., 
F.R.S8., Royal College of Science, Dublin, . 
XLV.—The Nebula surrounding Nova Persei. By W. E. WI1son, 
F.R.S., 
XLVI.—Method of observing the Altitude of a Celestial Object at Sea 
at Night-time, or when the Horizon is obscured. By 
J. Joty, D.Sc., F.R.S., F.G.S., ete., Hon. Sec., Royal 
Dublin Society, 
XLVII.—On the Progressive Dynamo-Metamorphism of a Porphyritic 
Andesite from County Wicklow. By Henry J. Szymovr, 
B.A., F.G.S. (Plates XXVI. and XXVII.), 
XLVIII.—Some Results of Glacial Drainage round Montpelier Hill, 
County Dublin. By W. 8B. Wrienur, B.A. (Plates 
XXVIII. and XXIX.), 
XLIX.—On the occurrence of Cassiterite in the Tertiary Granite of the 
Mourne Mountains, County Down. By Henry J. SzyMour, 
BAC) HIG. Ss, 
PAGH 
547 
556 
559 
568 
575 
583 
Fhe Authors alone are responsible for all opinions expressed in their Communications. 
DUBLIN: 
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1908. 
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