xlvlii 



on the arrangement of earthen raths, 80 ; 

 on some notices of the acts of St. 

 Patrick in the Book of Armagh, 269; 

 on certain Letters Patent to Trinity- 

 College, 394. 



Griffin, Daniel, M. D., death of, 485, obi- 

 tuary notice of, 486. 



Grote, George, elected Honorary Member, 

 305. 



Guidi, now the Forth, 34. 

 Gyroscope, the, mathematical application 

 to the problem of, 339. 



Hamilton, George A., official letter of, re- 

 garding the independence of the Aca- 

 demy, 398. 



Hamilton, Sir W. R., on a new and gene- 

 ral method of inverting a linear and qua- 

 ternion function of a quaternion, 182 ; 

 on the existence of a symbolic and biqua- 

 dratic equation which is satisfied by the 

 symbol of linear operation in quater- 

 nions, 190 ; on certain applications of 

 quaternions, 331 ; on a general centre 

 of applied forces, 394 ; on the locus of 

 the osculating circle to a curve in space, 

 394; on the eight imaginary umbilical 

 generatrices of a central surface of the 

 second order, 471. 



Handcock, Rev. William, donation of an 

 autograph letter of Oliver Goldsmith by, 

 153. 



Hansteen, Christopher, elected Honorary 

 Member, 305. 



Hardinge, William H., member of Council 

 (Com. of Antiquities) in 1862, 117; in 

 1863, 305 ; in 1864, 487 ; on manu- 

 script mapped townland surveys of Ire- 

 land, 39, 203, 223 ; on the old Countess 

 of Desmond, 477 ; on the application of 

 photozincography to the production of 

 illustrations of MSS., 330 ; donation of, 

 477. 



Hardt, Herm, Von der. Acta Concilii Con- 

 stantinensis, 368. 



Haughton, Lieut. J., on the difference be- 

 tween the rain-fall and evaporation at 

 St. Helena in 1860, 139. 



, Rev. Samuel, M. D., member of 



Council (Com. of Science) in 1862, 117 ; 

 in 1863, 304; in 1864, 487; on a gra- 

 phical mode of calculating the tidal drift 



■' in the Irish Sea or British Channel, 25 ; 

 on the dynamical coefficients of elasti- 

 city of steel, iron, brass, oak, and teak, 

 86 ; account of experiments to deter- 

 mine the velocities of rifle bullets, 1 05 ; 



on the rain-fall and evaporation at Dublin 

 in 1860, 153 ; account of observations on 

 the wind made at Leopold Harbour in 

 1848-9, 203 ; on the composition of the 

 granites of Donegal, 353; on the storm of 

 October 29, 1863, 409 ; on the muscular 

 mechanism of the hip- joint in man, 

 458; on the muscles of some smaller 

 monkeys, 467 ; presents original MS. 

 draft of the observed and calculated di- 

 urnal tides of the coast of Ireland for 

 1850-1, 38. 



Helmholtz, Herman, elected Honorary 

 Member, 487. 



Higuera, Father, his edition of thepseudo- 

 Flavius Lucius Dexter, 365. 



Hindustani, on the existence of a pure pas- 

 sive voice in, 197. 



Hip-joint in man, Professor Haughton on 

 the muscular mechanism of, 458. 



Hodgkinson, Eaton, death of, 303. 



Huerta y Vega, Don Francisco, Annales 

 de el Reyno de Gallicia, 382. 



Hyrtl, Carl Joseph, elected Honorary 

 Member, 487. 



Ibar, St., tombstone of, 61. 



Icelandic medical MS. presented, 289. 



Inghiramio, Curzio, literary frauds of, S62. 



Ingram, John K., LL. D., member of 

 Council (Com. Polite Lit.) in 1862, 

 117 ; in 1863, 305 ; in 1864, 487 ; Se- 

 cretary of Council, 117, 305, 487. 



Inis-Breachmaighe, or Brackley Island, 

 443 ; situation of, 447, 449. 



Innishgoil, ecclesiastical remains on, 435. 



Innishtooskert, ecclesiastical remains on, 

 429. 



Innishvickillane, ecclesiastical remains on, 

 430. 



Inscriptions, Irish monumental, 87, 456. 



Investigator, the, observations on the wind 

 made on board of, 203. 



Ireland, ancient animal inhabitants of, E. 

 Blyth on, 472 ; migrations from Spain 

 to, 354, 372 ; rank assigned to, at Coun- 

 cil of Constance, 368 ; various maps of, 

 43, 4G-51 ; mapped townland surveys 

 of, 39, 203 ; maps of escheated counties 

 of, 48 ; philology of language of, W. 

 Stokes on, 99. 



Iron, partial combustion of fluid, 164; 

 heated, process of blowing, 165 ; process 

 emploved in Dublin for partial burning 

 of, 169. 



Island-M'Coo, a crannog, 412, 426. 

 Italian literary frauds and forgeries, 354. 



