PTJBLICATIONS 
OF THE 
EOYAL IRISH ACADEMY. 
TRANSACTIONS: 
Quarto. Boards; or in Parts, stitched. 
)ols. I. to XXVIII. (some out of print). 
ol. XXIX. Part 1. — On the Plane Sections of the Cylindroid. Being the Seventh 
Memoir on the Theory of Screws. By Sm R. S. Ball, 
LL.D., F.R.S. Plates I. and 11. Price 3s. 
2. — On the Ogham Monument at Kilcolman. By the Eight 
Pev. De. GrEAYES, Lord Bishop of Limerick. Price Is. 
,, 3. — On Two-Nosed Catenaries and their application to the 
Design of Segmental Arches. By T. Alexandee, C.E. ; 
and A. W. Thomsgi^, B.Sc, Assoc. Mem. Inst. C.E. 
Plate III. Price 3s. 
The Brain and Eyeball of a Human Cyclopian Monster. 
By D. J. Cunningham, M.D. (Edinb. et Dubl.), ; and 
E. H. Bennett, M.D. Plates IV. and V. Price Is. Qd. 
On the Theory of the Content. By Sie Eobeet Stawell 
Ball, LL.D., F.R.S. Price 2s. Qd. 
The Tripartite Life of St. Patrick : New Textual Studies. 
By the Rev. B. Mac Caethy, D.D. Price Is. 
Geometrical Illustrations of Newlands' and Mendelejeff's 
Periodic Law of the Atomic Weights of the Chemical 
Elements. By the Rev. Samuel Haughton, M.D. 
(Dubl. et Bonon.), D.C.L. (Oxon.), LL.D. (Cantab, et 
Edin.). Price 2s. 
The Eighth Memoir on the Theory of Screws, showing how 
Plane Geometry Illustrates General Problems in the 
Dynamics of a Rigid Body with Three Degrees of 
Freedom. By Sie Robeet S. Ball, LL.D., F.R.S. 
Plate VI. Price Is. Qd. 
The Focal Circles of Spherical Conies. By the Right Rev. 
De. Geaves, Lord Bishop of Limerick. Price Is. 
On Three Similar Figures, with an Extension of Feuerbach's 
Theorem. By William S. M'Cay, M.A., F.T.C.D. 
Price Is. 
,, 11. — On the Motion of a Particle, and the Equilibrium of Flexible 
Strings on a Spherical Surface. By T. Peeston, M.A. 
Price Is. 
12. — The Pectoral Group of Muscles. By Beeteam C. A. 
WiNDLE, M.A., M.D. (Dubl.) ; Professor of Anatomy 
in the dueen's College, Birmingham. Price Is. 
4.— 
„ 5. 
„ 6. 
„ 10.- 
For Parts of Vols. XXVI. to XXVIII., see page 5. 
