PUBLICATIONS OF THE EOTAL IRISH ACADEMY. 



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



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



Vol. XXIV.— Science (complete), Sis. Qd. 



Polite LiTEEATimE (complete), os. j ^^^^^^^^ _^^^ ^.^^ 24.. 

 ,, ANTiauiTiES (complete), 19s. Qd. ) 



Vol. XXV.— SciEKCE (complete), 37.s. %d. 



Vol. XXVI (Science) :— (Complete). 35s. 



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

 the Development of its Antheridia and Tetraspores. By Edw. Peecetal 

 Weight, M.A., M.D., F.L.S., F.R.C.S.I. (Plates XII. & XIII.) [Pub- 

 lished January, 1879.] v. 2«s T / 



Part 19. — On the Formation of the so-called "Siphons," and on the ^ ' '' 

 Development of the Tetraspores in Polysiphonia. By Edwajid Peeoevai, 

 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 Casey, 



LL.D., F.R.S., M.R.I.A., Professor of Mathematics in the Catholic University of 

 Ireland. 3s. 6c?. [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.) [Published November, 1879.] 



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



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

 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.] 



Part 4. — Fasciculus of Prints from Photographs of Casts of Ogham Inscrip- 

 tions. By SiE Sawjel Feegtjson, LL.D. (With Plates I*, to V.) [In the Press.] 



Vol. XXVIII. (Science) :— 



Part 1.— On Chemical Equilibrium. By F. A. Taeleton, LL.D., F.T.C.D. 

 [Published December, 1880.] 



Part 2. — On a New Genus and Species of Sponge. By De. E. P. Weight. 

 (Plate I.) [PubUshed February, 1881.] 



Part 3. — On Blodgettia confervoides of Harvey, forming a new Genus"^ 

 and Species of Fungi. By Edw. Peeceval Weight, M.A., M.D., F.L.S., I 

 Professor of Botany in the University of Dublin. (With Plate II.) [Pub- | 

 lished February, 1881.] _ \ ^_ 



Part 4. — On a new Genus and Species of Unicellular Algse, living on ; 

 the Filaments of Rhizoclonium Casparyi. By Edw. Peeceval Wright, | 

 M.A., M.D., F.L.S., &c.. Professor of Botany in the University of Dublin. | 

 (With Plate 11.) [Published February, 1881.] J 



Part 5. — On the Periods of the First Class of Hyper-Elliptic Integrals. By 

 William R. Westeopp Roberts, M.A. Is. [Published March, 1881.] 



[_For continuation of List of PuUications, seepage iii. of this Cover.'] 



