TRANSACTIONS (NEW SERIES). 
VOLUME I. 
(Recently Published.) 
PART. 
9 — Places of One Thousand Stars observed at the Armagh Observatory. By Rry. THomas RomMNEy 
ROBINSON, D.D., LLD., D.C.L., F.RS., &C. (February, 1879.) ; 
10.—On the Possibility of Originating Wave Disturbances in the Ether by Means of Electric Forces. 
By Gro. FRAS. FITZGERALD, M.A., F.7.C.D. Part 1. (February, 1880.) 
11.—On the Relations of the Carboniferous, Devonian, and Upper Silurian Rocks of the South of 
Treland to those of North Devon. By Epwarp HULL, M.A., LL.D., F.R.S., Director of the 
Geological Survey of Ireland, and Professor of Geology, Royal College of Science, Dublin. 
Plates IV. and V., and Woodcuts. (May, 1880.) 
12—Physical Observations of Mars, 1879-80, By C. E. BURTON, B.A., M.R.LA., B.RAS. Plates VI., 
VII, and VIIL. (May, 1880.) 
13.-—On the Possibility of originating Wave Disturbances in the Ether by means of Electric Forces. 
Part 2. By Geo. FrRANctIS FIrzGERALD, M.A., F.7.c.D. (November, 1880.) 
14,—Explorations in the Bone Cave of Ballynamintra, near Cappagh, County Waterford. By A. 
Leira ADAMS, M.B., LL.D., F.R.S., F.G4.S. G,H. KINAHAN,M.R1.A. and R. J. UssHer. Plates IX. 
to XIV. (April, 1881.) 
15.—Notes on the Physical Appearance of the Planet Jupiter during the Season 1880-1. By The 
Earu or Rossk and Dr. Orro BorppickeR.—Plate XV. (January, 1882.) 
16.—Photographs of the Spark Spectra ot Twenty-one Elementary Substances. By W. A. 
HARTLEY, F.R.S.E., Professor of Chemistry, Royal College of Science, Dublin. Plates XVI, 
XVII. and XVIII. (February, 1882.) . 
17.—Notes on the Physical Appearance of the Comets 6 and ¢, 1881, as observed at Birr Castle, 
Parsonstown, Ireland. By The Earn or RossE and Orro BoEDDICKER, PH.D, Plate XIX, 
(August, 1882.) 
18—On the Laurentian Rocks of Donegal, and of other parts of Ireland. By Epwarp HUuLL, 
LL.D., F.R.S., &e., Director of the Geological Survey of Ireland, Plates XX. and XXI. 
(February, 1882.) 
VOLUME IL. (complete.) 
1.—Observations of Nebule and Clusters of Stars, made with the Six-foot and Three-foot Reflectors 
at Birr Castle, from the year 1848 up to the year 1878. Nos.1&2. By the Ricut Hon. 
THE EARL OF ROSSE, LI.D., D.C.L, F.R.S. Plates I. to TV. (August, 1879.) No. 3. Plates V. 
and VI. (June, 1880.) ; 
2—On Aquatic Carnivorous Coleoptera or Dytiscide. By Dr. Suarp, Plates VIL to XVIII. 
(April, 1882.) 
