XVI 



Page 



VI. On tJie Means of producing an Intense Heat by the Combustion 



of Oxyo-en and Hydrogen Gases. By the Rev. T. R. Robinson, 

 A.M. F. T. C. D. M.R.I. A. Read January 12th, \S18. - 93 



VII. Description of a Nexo Air-Pump. By George Kieman, Esq. 



M. R. I. A. Read Feb. 'i>'id,\S\S. - - - -109 



VIII. On the Manner, in 'which Algebraic Functions of the P7'inci- 

 pal Variable, are, in certain cases, introduced into the Integrals 

 of Linear Differential Equations, that have constant Co-efficients. 



By the Rev. Edward Hincks, A. M. F. T. C. D. M. R. I. A. 115 



IX. On Voltaic Electricity. By the Rev. T. R. Robinson, F. T. C. D. 



M. R. I. A. Read Nm. ^3d, 1818 - - - 121 



X. Essays respecting the Changes, which the Human Skeleton under- 



goes at different Periods of Life ; and the Deformities, to which 

 it is subject during its Development. By William Wallace, 

 M. R. C. S. I. M. R. I. A. 8sc. S^c. 

 Essay I, Read Feb. 22d, 1819 - - - 129 



Section II. Read June Q8th, 1819 ... 153 



XI. A Method of computing Astronomical Refractions, for Objects 



near the Horizon. By the Rev. John Brinkley, D. D. F. R. S. 

 M. R. I. A. and Andrews' Professor of Astronomy in the Uni- 

 versity of Dublin. Read Jan. IT th, 1820. - - l6S 



XII. On the Inscription of a Regular Polygon of Seventeen Sides 

 in a Circle : or Division of the Circumference into Seventeen 

 Equal Parts. By Samuel James, Esq. Presented by the Rev. 

 Francis Sadleir, D. D. F. T. C. D. M. R. I. A. Read Jan. 

 2^tk, 1820 - . - . . - 175 



XIII. A Method of correcting the Approximate Elements of the 

 Orbit of a Comet, and the Application of the same to 

 Observations made at the Obervatory of Trinity College, 



