: a , ie ee 
THE 
SOTENTIFIC PROCBEDINGS 
OF THE 
ROYAL DUBLIN SOCIETY. 
Vol, VIIT. (N. 8.) APRIL, 1893. Part 1. 
CONTENTS. PAGE 
I.—Pogotrichum hibernicum, sp.n. By T. Jounson, D.Sc., F.L.S., 
Professor of Botany in the Royal College of Science, and 
Keeper of the Botanical Collections, Science and Art Museum 
Dublin. (Plate J.), : : 1 
II.—Note on the Action of Pee on eelenar Tineide. By Se 
Cartes A. Cameron, M.D., : 11 
III.—The Use of the Protractor in Field- Geology. By ALreEp Hansen, 
M.A., F.G.S., : 12 
VK Herts on the Wonca deltections a in Torres Str oe iy 
Professor A. C. Haddon, 1888-1889. Pycnogonida (Supple- 
ment). By Guorex H. Carpenter, B.Sc., Lond., Assistant 
Naturalist in the Science and Art Museum, Dublin. (Plate 2h 
Y.—On the Germination of Seedlings in the absence of Bacteria. By 
H. H. Drxon, B.A. (Abstract), . : . 28 
VI.—A List of some of the Rotifera of Ireland. ‘By! Miss co s. 
Guascotr. (Plates III. to VII.), . 29 
ViII.—On Pitchstone and Andesite from Detiory Diykes in Donegal 
By Proressorn W. J. Sonztas, LL.D., D.Sc., F.R.S., . Debio: 
VIII.—On the Variolite and Associated irigdtid Rooks of Ranndwead, 
Co. Wicklow. By Prorsssor W. J. ee h.DsD:8e-.; 
eS. 94 
IX.— Description of some Neg Spscie’ of stint aan ented Straits. 
By Proressor A.C. Happon and Atice M. Suackteton, B.A., 116 
X.—On Hemitrypa hibernica, M‘Coy. By Grenvitte A. J. Cox, 
F.G.S., Professor of Geology in the poke ae of Science 
for Ireland. (Plate VIII.), . : 132 
_ XI.—On the Bright Colours of ce lowers, By J. J OLY, M. i, 
D.8c., F.R.S., : 145 
“XIL—Suegestion as to a Possible Keiive of the Briere ced fie 
the Life of Bacilli, and as to the Cause of their Small Size. By 
G. JoHnstonE Stonzy, M.A., D.Sc., F.R.S., Vice-President, 
Royal Dublin Society, . é 154 
XIII.—On the Law of Gladstone and Tite: as an 7 Oabienl Probe. By 
Proressor W. J. Sonnas, D.Sc., LL.D., F.R.S. (Abstract), . 157 
The Authors alone are responsible for all Opinions expressed in their Communications. 
DUBLIN: 
PUBLISHED BY THE ROYAL DUBLIN SOCIETY. 
LONDON: WILLIAMS & NORGATE, 14, HENRIETTA-STREET, 
COVENT GARDEN. 
1893. 
- Price Six Shillings. 
