CONTENTS, 
The date of Reading will be found prefixed to each Paper. The date of Publication, as inserted in the following 
Table of the Contents of this Volume, is that when the Paper was laid in a printed form before the Society; or 
when, during the Vacation, it was forwarded to the Society's Booksellers, 
ADENEY, W. E., Assoc. R.C.So.1., F.1.C. 
The Course and Nature of Fermentative Changes in Natural and Polluted Waters, and 
in Artificial Solutions, as Indicated by the Composition of the Dissolved Gases. 
(Part. 1V.) Humus; its Formation and Influence in Nitrification, 
[Published August, 1897.] 
BOOTH, WILLIAM, M.A. 
On Fresnel’s Wave Surface and Surfaces related thereto, 
[Published July, 1897.] 
COLE, GRENVILLE A. J., M.R.LA., F.G.S. 
The Rhyolites of the County of Antrim; with a Note on Bauxite (Plates III. andIV.), . 
[Published May, 1896.] 
On the Geology of Slieve Gallion, in the County of Londonderry (Plates XIII. 
and XIV.), ; : ¢ 0 : - : 5 : : : : 
[Published July, 1897.] 
DIXON, A. FRANCIS, B.A., M.B. 
On the Development of the Branches of the Fifth Cranial Nerve in Man (Plates I. 
and II.), : 4 - 5 
[Published May, 1896.] 
DUBOIS, EUGENE. 
On Pithecanthropus erectus : a Transitional Form between Man and the Apes, 
[Published February, 1896.] 
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269 
205 
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