vi List of the Contributors. 



CoEET, Thomas Hughes, M.A. page. 



On the Heights attained by Plants on Ben Bulben, ... 73 



Feegtjson, Sie Samuel, LL.D. 



On a Mode of Sub-aqueous Tunnelling, 78 



GoEE, J. E., F.E.A.S. 



A Catalogue of Known Variable Stars. With Notes and Obser- 

 vations, 149 



A Catalogue of Suspected "Variable Stars. (Plate II), . . 267 



Supplementary Notes to Catalogue of Suspected Variable Stars, 411 



On the Orbit of the Binary Star ^ Delphini, .... 538 



On the Orbit of the Binary Star 0. Struve 204, . . .586 



Haddon, Axfeed C, M.A. 



Preliminary Report on the Fauna of DubUn Bay, . . . 523 

 First Report on the Marine Fauna of the South-west of Ireland, 599 



Haet, Heney Chzchestee, B.A. 



Notes on the Plants of some of the Mountain Ranges of Ireland, 211 



Report on the Flora of South-west Donegal, .... 443 



Further Report on the Flora of Southern Donegal, . . . 568 



HAUGHTOif, Rev. Samuel, M.D., F.R.S. 



Critical and Literary Remarks on Euclid's Doctrine of Parallel 

 Lines, 71 



Abstract of Discussion of the Greenwich Observations of Hourly 



Temperatures, ........ 639 



Hates, Richaed, M.D. 



Notes on Microphotographic Methods, 50 



Hennessy, Heney, F.R.S. 



On the Fluid State of Bodies composing our Planetary System, 580 



On the Distribution of Temperature over Great Britain and 



Ireland. (Plate VI., Map), 709 



