Vll 



Fagk. 



On Ancient Sepulchral Cairns on the Loughcrew Hills. By E. A. Conwell, Esq , 355 

 On the Equations and Properties — (1) of the System of Circles touching three 

 Circles in a Plane ; (2) of the System of Spheres touching four Spheres in 

 Space ; (3) of the System of Circles touching three Circles on a Sphere ; (4) of 

 the^ System of Conies inscribed to a Conic, and touching three inscribed 



Conies in a Plane. By John Casey, Esq., 396 



On Early Irish and Pre-Norman Antiquities. By G. V. Du Koyer, Esq., . . 423 

 Notes on Muscular Anomalies in Human Anatomy. By Alexander Macalister, 



Esq., 444 



On two Undescribed Ligaments in the Human Body. By Alexander Macalis- 

 ter, Esq., 476 



On a Fluid possessing Opposite Rotatory Powers for Rays at Opposite Ends of 



the Spectrum. By the Rev. J. H. Jellett, 536 



On Vestiges of Ancient Human Habitations in Poole's Cavern, Derbyshire. By 



Denis Crofton, Esq., 536 



On the Lia Fail on Tara Hill. By E. A. Conwell, Esq., 539 



On an Inscribed Cromleac near Rathkenny, Co. Meath. By E. A. Conwell, Esq., 541 

 On the Battle of Moytura. By Sir W. R. "Wilde, , . . 545 



APPENDICES. 



I. Account for the year ending 31st March, 1864, i 



II. Acount for the year ending 31st March, 1865, x 



III. Abstract of the Account for the year ending 31st March, 1866, .... xix 



Address to Lord Lieutenant, — page 170. 

 Antiquities Bought, — 385. 



Presented —41, 106, 199, 215, 221, 223, 267, 306, 384. 

 Antiquities Deposited, — 41, 536. 



,, Grants for Purchase of, — 267, 545. 

 Books and MSS. Presented,— 106, 182, 215, 223, 260, 262, 267, 306, 379, 386, 



539, 545. 

 „ Deposited,— 306, 535. 



Maps and Drawings Presented, — 148, 343, 379, 423. 

 Election of Honorary Members, — 389. 



„ Council and Officers,— 220, 388. 



„ Members— 1, 42, 192, 209, 224, 325, 390, 530, 539, 546. 

 Presidents' Addresses, — 307, 325, 390. 

 Reports of Council,— 215, 380. 



Resolutions,— 192, 225, 262, 306, 316, 376, 389, 395, 444, 535. 

 Letters Read, 224, 260, 262, 534. 



