PUBLICATIONS OF THE EOYAL lEISH ACADEMY. 



TKANSACTIONS : Quarto, hoards ; or in parts, stitched. 



Vols. I. to XXIII. {some out of print). For Prices, &c., inquire at tlie Academy. 

 Vol. XXIV.— ScrEi^CE (complete), 31s. Gd. 



,, Polite Liteeattjee (complete), 5s. 1 , ,•, , .., ,.,, x „. 



" , , \ J- together (with title), 24s. 



,, ANTiaiTiTiES (complete), 19s. Gd. ) 



Vol. XXV. — ScEEN-CE (complete), 37s. 6d. 



Vol. XXVI.— (Science) :— (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 Key. H. Lloyd, D.D., D.C.L., Provost of Trinity College, Dublin. Is. [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. Mackintosh, B.A. 

 (Plates IX., X., XL) Is. [PubHshed October, 1878.] 



Part 18. — On the Cell-structure of Griffithsia setacea (Ellis), and on~ 

 the Deyelopment of its Antheridia and Tetraspores. By Edw. Peeceval 

 Weight, M.A., M.D., F.L.S., r.R.C.S.L (Plates XIL & XIIL) [Pub- 

 j^ished January, 1879.] S. 2"? fiJ 



Part 19. ■ — On the Formation of the so-caUed "Siphons," and on the 

 Development of the Tetraspores in Polysiphonia. By Edwaeb Peeceval 

 Weight, M.A., M.D., F.L.S., F.R.C.S.I. (Exam.) (Plate XIV.) [Pub- 

 lished January, 1879.] 



Part 20 On the Equations of Circles (Second Memoir). By John Caset, 



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 Joseph P. O'Reilly, C.E. Central School of Paris ; Professor of Mining and 

 Mineralogy, Royal College of Science, Ireland. Is. [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 Joseph P. O'Reilly, 

 C.E. Central School of Paris ; Professor of Mining and Mineralogy, Royal College 

 of Science, Ireland. (With Plates XV. to XVIII.) [PubHshed November, 1879.] 



Vol. XXVII. (Polite Lit. and Antiquities) : — 



Part 2. — On an Ogam Monument in the County of Kerry. By the RrCrHX 

 Rev. De. Geaves, Lord Bishop of Limerick. [Published November, 1878.] 



Part 3. — On the Croix Gammee, or Swastika. By the Right Rev. Chaeles 

 Geaves, D.D., M.R.I.A., Lord Bishop of Limerick, &c. (With Illustrations.) 

 [Published April, 1879.] 



Vol. XXVIII. (Science) :— 



Part 1. — On a New Genus and Species of Sponge. By De. E. P. Weight. 

 (Plate I.) [In the Press.] 



[/br continuation of List of Publications, see page iii. of this Cover. '\ 



