PUBLICATIONS OF THE ROYAL IRISH ACADEMY. 
TRANSACTIONS: Quarto, boards ; or in parts, stitched. 
Vols. I. to XXIII. (some out of print). For Prices, &c., inquire at the Academy. 
Vol. XXIV.—Scrence (complete), 31s. 6d. 
9 PorttE LITERATURE (complete), ds. 
> ANTIQUITIES (complete), 19s. 6d. 
Vol. XXV.—ScrENcE (complete), 37s. 6d. 
Yol. XX VI.—(ScrencE):—(Complete). 35s. 
Part 16.—Attempt to deduce the General Laws of the Variations of Tempera- 
ture at the Earth’s Surface from those of Solar and Terrestrial Radiation. By 
the Ruv. H. Luoyp, D.D., D.C.L., Provost of Trinity College, Dublin. 1s. [Pub- 
lished August, 1878. ] 
Part 17.—Report on the Acanthology of the Desmosticha (Haeckel). Part I.—. 
On the Acanthological Relations of the Desmosticha. By W. H. Mackrntosu, B.A. 
(Plates IX., X., XI.) 1s. [Published October, 1878. ] 
Part 18.—On the Cell-structure of Griffithsia setacea (Ellis), and on 
the Development of its Antheridia and Tetraspores. By Epw. PERcEVAL 
Wericut, M.A., M.D., F.L.S., F.R.C.S.1. (Plates XII. & XIII.) [Pub- 
lished January, 1879. ] 
Part 19.—On the Formation of the so-called ‘‘Siphons,” and on the | 
Development of the Tetraspores in Polysiphonia. By Epwarp PERcEVAL 
Warieut, M.A., M.D., F.L.S., F.R.C.S.1. (Exam.) (Plate XIV.) [Pub- 
lished January, 1879. | 
Part 20.—On the Equations of Circles (Second Memoir). By Jomn Caszy, 
LL.D., F.R.S., M.R.I.A., Professor of Mathematics in the Catholic University of 
Ireland. 3s.6d. [Published April, 1879. ] 
Part 21.—On the Correlation of Lines of Direction on the Earth’s Surface. 
By Josep P. O’Rettty, C.K. Central School of Paris ; Professor of Mining and 
Mineralogy, Royal College of Science, Ireland. 1s. [Published June, 1879. ] 
Part 22.—Explanatory Notes and Discussion of the Nature of the Prismatic 
Forms of a Group of Columnar Basalts, Giant’s Causeway. By JosrpH P. O’REILLY, 
C. E. Central School of Paris ; Professor of Mining and Mineralogy, Royal College 
of Science, Ireland. (With Plates XV.to XVIII.) [Published November, 1879.] 
\ together (with title), 24s. 
Qs. 6d. 
Vol. XXVIL (Pourre Lir. AND ANTIQUITIES) :— 
Part 2.—On an Ogam Monument in the County of Kerry. By the Rieur 
Rey. Dr. Graves, Lord Bishop of Limerick. [Published November, 1878.] 
Part 3.—On the Croix Gammée, or Swastika. By the Rigur Ruy. CHARLES 
Graves, D.D., M.R.I.A., Lord Bishop of Limerick, &c. (With Illustrations.) 
| Published April, 1879. ] 
Vol. XXVIII. (Scrence) :— 
Part 1.—On Chemical Equilibrium. By F. A. Tarteron, LL.D., F.T.C.D. 
| Published December, 1880. ] 
Part 2.—On a New Genus and Species of Sponge. By Dr. E. P. Wricut. 
(Plate I.) [In the Press. ] 
| For continuation of List of Publications, see page iii. of this Cover. | 
