758 



Index. 



Barringtonia racemosa, Eoxb., 160. 



speciosa, L. , 160. 



Bazzania, Irish species of, 622. 

 Beryllium, its atomic weight and specific 



heat, 731. 

 Binocular form of spectroscope, 42. 

 Biquadratic, on the, 40. 

 Bird myology, on some points in, 56. 

 Blasia, Irish species of, 663. 

 Blepharostoma, Irish species of, 636. 

 Blepharozia, Irish species of, 634. 

 Bradypus gularis, cranial osteology of, 



139. 

 Buoyancy of bodies of a greater density 



than water, on a cause of, 22. 



Calamogrostis epigejos, 576. 

 Calcarina hispida, nov. sp., 589. 

 Campanula rotundifolia, variety 



speciosa, 571. 

 Carboniferous limestones of Ireland, the 



dolomites of, 705. 

 Cave of Dunmore, animal remains 



found in, 480. 



• bone deposits in, 168. 



Knockninny, exploration of, 465. 



Cavities, reti'O-peritoneal, 79. 

 Cephalozia, Irish species of, 624. 

 Cervus megaceros, remains at Bally- 



betagh, 738, 552. 

 Cesia, Irish species of, 659. 

 Chemical changes in the Potato during 



the progress of the disease, 736. 

 Chemical Laboratory of Trinity College, 



DubHn, reports from, 731. 

 Chemical test, new, for alcohol, 579. 

 Chiloscyphus, Irish species of, 630. 

 Cblamydomyxa labyrinthuloides, nov. 



gen. et sp., 140, 159. 

 Cholcepus didactylus, myology of, 66. 

 Coals and iron-stones from Dungannon, 



529. 

 Coniferse, structure of the leaves of, 



209. 

 Conocephalus, Irish species of, 601. 

 Corona, malformed, of Echinus 



esculentus, 206. 

 Cubic equation, product of the squares 



of the differences of the roots of, 744. 

 Cup anemometer, on the theory of, and 



the determination of its constants, 427. 

 Cyclostigma kiltorkense, 47. 



Detection of arsenical compounds, on 



a ready means of, 225. 

 Diatomacese, Irish, list of {for index of 



genera and species, vide p. 420), 235. 

 Diatoms, classification of, 242. 



Diatoms, distribution of, 244. 



, index of Irish species, 420. 



-, motion of, 237. 



, reproduction of, 239. 



, structure of, 237. 



Diplophyllum, Irish species of, 642. 

 Dissociation of molecules in solution, 



230. 

 District eight, of Ireland, plants new 



to, 556. 

 Dolomite, contribution to the history 



of, 705. 

 Drifting power of tidal currents versus 



that of wind-waves, 443. 

 Dublin streets, ammonia in the water of, 



459. 

 Dumortiera, Irish species of, 602. 

 Dunmore cave, deposits in, 168. 



Earthquakes in Ireland, 9. 



Echinus esculentus, malformed, 206, 



Elatine hexandra, 567. 



Equations, algebraical, of the third 



degree, 26. 

 Equation of the squares of the differences 



of a biquadratic, 40. 

 Eriocaulon septangulare, 575. 

 Errors, personal, in transit observations, 



484. 

 Eugenia secheUarum, Baker, 170. 

 wrightii. Baker, 160. 



Flora of Aran compared with that of 



Bofin, 557. 



of Inish-Bofin, Galway, 553. 



Fluorescence, as a means of detecting 



adulteration, 82. 

 Foraminifera, from Loo Choo Islands, 



589. 



from the Seychelles, 586. 



Formulse for the solution of algebraical 



equations of the third degree, 26. 

 Fossils from the upper old red sandstone 



of Kiltorcan Hill, 45. 

 Fossombronia, Irish species of, 661. 

 Frullania hutchinsise, described and 



figured, 608. 

 Frullania, Irish species of, 608. 

 Fulminic acid, newly observed properties 



of certain salts of, 183. 



Geography, physical, of Ireland, changes 



in, 6. 

 Gluciniim, its atomic weight and specific 



heat, 731. 

 Gonidea question, on the, 92. 

 Granite rocks of Tar-Connaught, 102. 

 origin of, 133. 



