CONTENTS. V 



Account of a Charter granted to the Abbey of Mellifont. By the 

 Rev. James H. Todd, B.D page 135 



Extract from a Letter from M. D'Abbadie to the Rev. Humphrey 

 Lloyd 136 



On the Diurnal March of the Horizontal Needle, on the 31st of 

 August and 13th of November, 1837. By the Rev. Humphrey 

 Lloyd, A.M 138 



Notice of a remarkable Collection of Stone Circles, Cairns, &c., in 

 the Townland of Carrowmore. By George Petrie, Esq. . . . 140 



On the Medals and Medallists connected with Ireland. By the 

 Very Rev. the Dean of St. Patrick's 143 



On the Ancient Geography of Gaul and the British Islands. Bv 

 William West, M.D '.144 



On the Motion of the Boomerang. By Mr. Carroll and Rev. H. 

 Lloyd 145 



On the Amount of Rain in the Months of August, September, and 

 October. By the Rev. Thomas Knox 146 



On some Snow Crystals observed on the 14th of January, 1838. 

 By W. Thompson and Robert Patterson, Esqrs 147 



On the annual Decrease of the Dip in Dublin. By the Rev. 

 Humphrey Lloyd, A.M 148 



Account of a Cromlech near Bombay, contained in a Letter from Dr. 

 Hibbert Ware to Sir William Betham 151 



On the Sulphates and Nitrates of Mercury. By Robert J. 

 Kane, M.D 154 



On the Properties of a new Voltaic Combination. By Thomas 

 Andrews, M.D 157 



On a new Optical Instrument. By James Mac Cullagh, Esq., A.M. 158 



On the Years and Cycles of the ancient Egyptians. By the Rev. 

 Edward Hincks, D.D 160, 169 



On a new Compound, consisting of Iodine, Iodide of Potassium, 

 and the Essential Oil of Cinnamon. By James Apjohn, M.D. . 162 



On the Declination Instrument employed in the Magnetical Obser- 

 vatory of Dublin. By the Rev. Humphrey Lloyd 163 



On an Improvement in the Sustaining Battery. By E. S. Clarke, 



Esq 166 



On the Theory of Ammoniacal Compounds. By Robert J. 



Kane, M.D 171 



On ancient Irish consecrated Bells. By George Petrie, Esq. . . 174 



On the Irish Hare. By William Thompson, Esq 177 



On an hitherto unobserved Force of Elevation and Degradation. 

 By Robert Mallet, Esq 178 



Remarks on the '* Antiquitates Americanse." By Samuel Fergu- 

 son, Esq 180 



On the Ammoniacal and other Basic Compounds of the Copper and 

 Silver Families. By Robert J. Kane, M.D 182 



