HOYAL IRISH ACADEMY. 



SOME RECENT PUBLICATIONS. 



MATHEMATICS. 



Alexander (T.) and A. W. Thomson : Two-nosed Catenaries, and 

 their application to Segmental Arches. 1888. pp. 56. i plate. 

 4to. 3s. 



Alexander (T.) and A. W. Thomson : Elliptographs, and a 

 Mechanical Rocker for Detecting Oscillations. 1897. pp.40. 4to. 

 2s. 6d. 



Ball (Sir R. S.) : Dynamics of a Rigid System moving in Elliptic 



Space. 1881. pp. 26. 4to. is. 

 Ball (Sir R. S. ) : Extension of the Theory of Screws to the Dynamics 



of any Material System. 1881. pp. 38. 4to. is. 6d. 



Ball (Sir R. S.) : Plane Sections of the Cylindroid. 1887. pp.31. 



2 plates. 4to. 3s. 

 Ball (Sir R. S.) : Dynamics and Modern Geometry — A New Chapter 



in the Theory of Screws. 1887. pp. 44. 4to. 2s. 

 Ball (Sir R. S.) : 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. 1889. pp. 58. 



I plate. 4to. IS. 6d. 

 Ball (Sir R. S.) : Theory of the Content. 1889. pp. 60. 4to. 2s. 6d. 



Ball (Sir R. S.) : Theory of Permanent Screws. 1891. pp. 40. 4to. 

 IS. 6d. 



Ball (Sir R. S.): Theory of Pitch Invariants and Theory of Chiastic 

 Homography. 1894. pp. 28. 4to. is. 6d. 



Ball (Sir R. S.): Further Developments of the Relations between 

 Impulsive Screws and Instantaneous Screws. 1897. pp. 46. 410. 

 2s. 



Ball (Sir R. S.) : Twelfth and Concluding Memoir on the Theory of 

 Screws. 1898. pp. 52. 4to. 2s. 



Ball (Sir R. S.) : Further Developments of the Geometrical Theory of 

 Six Screws. 1901. pp. 68. 4to. 2s. 



Ball (Sir R. S.) : Reflection of Screw Systems and allied questions 

 1903. pp. 54. 4to. IS. 9d. 



Ball (Sir R. S.): Some Extensions of the Theory of Screws. 1904. 

 pp. 67. 4to. 2S. 



Casey (J.) : Cubic Transformations. 1880. pp.140. 4to. 2s. 6d. 



Culverwell (E. P.) : Maximum and Minimum Solutions in the 

 Calculus of Variations when certain Fluxions of the Variables have 

 finite and arbitrary Variations. 1899. pp.15. 8vo. 3s. 6d. 



Fraser (J.) : Reduction of a Quartic Surface possessing a Nodal 

 Conic to a Canonical Form. 1904. pp. 14. 8vo. 6d. 



