Contents. 
IRD Ye 
XXIX.—A Contribution to the Theory of the Order of Crystallization 
of Minerals in Igneous Rocks. By J. A. CunnineHam, 
A.R:C.8c.1., B. A. (Plates XXII. and XXIII. pees 0 
XXX.—On the Theory of the Stratified Discharge in Geissler Tubes. 
By H. Y. Gitt, 8.J., Clongowes Wood College, Co. Kildare, 
XXXI. —Prospecting for Gold in Co. Wicklow, and an Examination of 
Trish Rocks for Gold and Silver. By E. St. Joun Lysunn, 
A.R.C.8c.1., F.G.S., Mining Engineer, Pretoria. (Plates 
XXIV. and XXV. yo : 5 6 < a 
XXXII.—On some Problems connected with Atmospheric Carbonic 
Anhydride, and on a New and Accurate Method for 
Determining its Amount Suitable for Scientific Expeditions. 
By Proressor E. A. Lurts, D.Sc., Pu.D., and R. F. 
Brake, F.1.C., F.C.S8., Queen’s College, Belfast, : : 
XXXIII.—On a Simple and Accurate Method for Estimating the Dis- 
solved Oxygen in Fresh Water, Sea Water, Sewage 
Effluents, &e. By Prorsssor E. A. Lerrs, D.Sc., Pu.D., 
and R. F. Buaxkn, F.1.C., F.C.8., Queen’s College, Belfast, 
XXXIV.—The Application of the Kitson Light to Light-Houses and 
other places where an extremely Powerful Light i is required. 
By Joun R. Wicuam, M.R.I. PACA ate 4 c ° 
XXXV.—On the Pseudo-opacity of Anatase. By J. Jony, Sc.D., 
F.R.S., Hon. Secretary, Royal Dublin Society, C 0 
XXXVI.—Incandescent Electric Furnaces. By J. Jory, M.A., Sc.D., 
F.R.S., Hon. Secretary, Royal Dublin Society, Professor 
of Geology and Mineralogy in the University of Dublin, 
XXXVII.—On an Improved Method of Identifying Crystals in Rock 
Sections by the use of Birefringence. By J. Jony, M.A., 
Sc.D., F.R.S., Hon. Sec., Royal Dublin Sonic Professor 
of Geology and Mineralogy i in the University of Dublin, 
XXXVIII.—A New Thermo-Chemical Notation. By James Hotms 
Pottox, B.Sc., ° 5 < s : S 
XXXIX.—On the Synthesis of Galactosides. By Prorressorn Hucu 
Ryan, M.A., D.Sc., F.R.U.I., and W. Sztoan Muitus, 
M.A. , University College, Dublin, . 0 : - 
XL.—On the Synthesis of Glucosides. By Prorrsson Hucu 
Ryan, M.A., D.Sc., F.R.U.I., University College, Dublin, 
XLI.—On the Preparation of Amidoketones. By Prorrsson Hueu 
Ryan, M.A., D.Sc., F.R.U.I., Catholic Gane School 
of Medicine, Dublin, 
XLII.—A Theory of the Molecular Constitution of Suporatrated 
Solutions. By W. N. Harttey, F.R.S., 0 . 
XLIII.—Award of the Boyle Medal to Professor Thomas Eretous 
Wiye\os IDaSiGk, INGIRSon IEE : . 
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