roy Se 
CONTENTS. 
VOL. XI. 
I.—The Effect of very low Temperatures on moist Seeds. By J. Apams, 
M.A., Assistant in Botany, Royal College of Science, Dublin, 
II.—Note on the Supply of Water to Leaves on a dead Branch. By Henry 
H. Drxon, Sc.D., Professor of Botany, Dublin University, . 
IIJ.—The Influence of Water-Vapour upon nocturnal Radiation. By J. R. 
Surron, M.A., F.R.Msr.S., : : ‘ : : : : 
IV.—A modified Form of Electrical Control for Driving Clocks. By Sir 
Howarp Grup, F.R.S., Vice-President, Royal Dublin Society, 
V.—A new Form of Right- Ascension slow Motion for Equatorial Telescopes, 
Illustrated by the Driving-Gear of the Cape Town Equatorial. By 
Sir Howarp pues E.R. S., Vice-President, Boye Dublin pees: 
(Plate I.), 
V1I.—On two New Irish Species of Collembola. By Groner H. Carpenter, 
B.Sc., M.R.I.A., Professor of Boole in the Royal College of 
Science, Dublin. (Plate II.), 
VII.—On Entoptic Vision; or, the Self-Examination of Objects within the 
Eye. By Proressor W. F. Baxrrert, F.R.S. (Part I1.), : 
VILI.—On Entoptic Vision. Parts Il. andIII.; Part I1.: The Entoptiscope 
and its Applications. By W. F. Barrer, F.R.S., Professor of 
Experimental Physics, Hoyas College of Science for Ireland. (Plates 
hi; LY.), 4 ; , : : z . ; 
IX.—On the Vapour-pressure of a pure Liquid at Constant Temperature. 
By Sypnzx Youne, D.Sc., F.R.S., Trinity College, Dublin, 
X.—Note on the Sublimation of Sulphur at ordinary Temperatures. By 
Ricuarp J. Moss, F.1.C., F.C.S. (Plate V.), . : : 
XI.—On a possible Connexion between the Eruption of Vesuvius and the 
Earthquake at San Francisco in aoe 1906. By Tue Rey. H. V. 
Git, 8.J., ; 
XII.—On Entoptic Vision. Part IV. By W. F. Barrerr, F.R.S., Pro- 
fessor of Experimental Physics, Royal College of Science for Ireland. 
(Plates VI.-VIII.), p 6 
XIII.—A contribution to the Study of Evaporation from Water-Surfaces. By 
J. R. Surron, M.A. (Plate IX.), F 
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