ae 1 
CONTENTS. 
VOL. Exe 
ACR 
PAGE 
I1.—Corallorhiza innata R. Br., and its Mycorhiza. By A. VaucHan 
Jennines, F.L.S., F. G.8. -, and Henry Hanna, M.A., B.Sc. 
(Plates I. ‘and II. ), 5 1 
II.—Mining and Minerals in “the Tishaa na Se aetaniae By 
KE. St. Joun Lyzurn, M.E., A.R.C.Sc.1., F.G.S. (Plate III.), 12 
IIJ.—A List of Irish Gomiinacon, By T. Toon D.Sc. (Lond.), 
F.L.S., Professor of Botany, Royal College of Science, and 
Keeper of the Botanical Collections, Science and Art ae 
Dublin; and Miss R. Hensman,; . : - 22 
V.—Notes on a Method of comparing the tates Opaeiies of Oraatie 
Substances to the X Rays. By Ernest A. W. Hentey, B.A., 31 
V.—The Kisselguhr of Co. Antrim. By James Hotms Pottox, Bice 33 
VI.—On the Correction of Errors in the Distribution of Time Signals. 
By Sir Howarp Gruss, F.R.S., Vice-President, Royal Dublin 
Society. (Plates IV. and V.), 5 5 37 
V1I.—Proposal for the Utilization of the ‘‘ Marconi? Sten of Wire- 
less Telegraphy for the Control of Public and other Clocks. 
By Sir Howarp Gruss, F.R.S., Vice-President, R.D.S.,  . 46 
VIIJ.—On a Hydro- Dynamical Hypothesis as to Electro- Magnetic Necons 
By Pror. Georcr Francis FrrzGerarp, F.R.S., . 50 
IX.—Note on the Results that may be expected from the sioposed 
Monster Telescope of the Paris Exhibition of 1900. By Sim 
Howarp Gruss, F.R.S., Vice-President, R.D.S. (Abstract), . 55 
X.—On the Concentration of Soap Solution on the Surface of the 
Liquid. By Davin Henry Hatt, B.A., : : 3 56 
XI.—The Rio del Fuerte of Western Mexico, ci its Tauterien By 
Kinstry DrypEn rete M.A., Assoc. M. Inst. C.E. iad 
WAS COVE vas : 60 
XII.—Note on Improvements in fis Mean: of causing Oasnetore or 
Flashes in Buoy Lamps and Beacons in which the Lights Burn 
Continuously for a month or a longer time. Py Joun R. 
Wicuam, M.R.I.A., ° 2 76 
XITI.—Survey of that Part of the Range of iene s Omerations cio 
Man is: competent to study. By G. Jounstone Stoney, M.A., 
D.Sc., F.R.S. (Figures 1 to 6 Glas (Plate), 1.) ee) 
XIV. Tee of the Boyle Medal to Grorce JoHNSTONE STONEY, M. Aor, 
D.Sc., F.R.S., at the Evening Scientific See of the Royal 
Dublin Society, held March 22nd, 1899, : ee ae ae! 
