vi List of the Contributors. 



Casey, J., LL.D., F.R.S. page. 



On the Equation of the Squares of the Differences of a 



Biquadratic, ......... 40 



Davt, Edmund, A.M., M.D. 



On some newly-observed Properties possessed by certain Salts 



of Fulminic Acid, . . . . . ' . . . 183 

 On a Ready Means of Detecting Arsenical Compounds, . . 225 

 On a New Chemical Test for Alcohol, 579 



Donovan, M. 



On some Further Improvements of the Comparable Self- 



Registering Hygrometer, . . . . . . .166 



Deetek, John L. E., M.A. 



On Personal Errors in Astronomical Transit Observations, . 484 



Hakdman, Edward T., F.C.S. 



On two New Deposits of Human and other Bones, discovered 



in the Cave of Dunmore, Co. Kilkenny (Plate xviii.), . 168 



Analysis of Coals and Iron-stones from the Dungannon Coal- 



Field, Co. Tyrone, Ireland, 529 



. A Contribution to the History of Dolomite (with Plates xli. 



and xlii.), .......... 705 



Haxtghton, Rev. Samuel, M.D., F.R.S. — (^SeePLUNKETT, T.) 



Jellett, Rev. J. H., B.D., S.F.T.C.D. 



On the Chemical Changes which take place in the Potato 



during the progress of the Disease, . . . . . . 736 



Kelly, J. E. 



On a Case of Polydactylism (Plates xsxvi., xxxvii., xxxviii., 



and xxxix.), . . . . . . . . . 539 



KiNAHAN, G. H. 



On Microscopical Structure of Rocks. Report No. I. — 



Ingenite Rocks (Plates vii. and viii.), 94 



On Grranite and other Ingenite Rocks of Yar-Connaught and 

 the Lower Owle (Plates ix., x., xi., xii.), . . , .102 



Report on the Microscopical Structure of Rocks. No. II. 



(Plate viii.), 161 



Report on the Microscopical Structure of Rocks. Report 



No. III., 164 



On Ingenite Rocks. Report No. IV., 180 



The Drifting Power of Tidal Currents versus that of Wind- 

 waves (with Illustrations), 443 



Leepek, Gr. L. 



On Retro-peritoneal Cavities (Plate v.), 79 



Macalistee, Alexander, M.D.— (^See aiso Plunkett, T.) 



On some Points in Bii'd Myology (with Illustrations), . . 56 

 On the Presence of Lachrjino-jugal Sutui-e in a Human Skull, 



and its Comparative Anatomy (Plate i.), .... 58 



