Index. 
Dynamics of a rigid body, problems on, 
552. 
Electrical conductivity of Selenium, on 
the influence of light on, 529. 
Eozoon canadense, 117, 123, 129, 140. 
Erica tetralix, anomalous form of 
corolla in, 191. 
Floatation of sand, 153, 252, 554. 
Flora, Irish, additions to, 192, 
, Mosses, synopsis of, 329. 
, papers relating to, 291. 
Flora, Irish, recent additions to, 256. 
, species to be removed from, 260. 
Fish remains in the alluvial clay of the 
River Foyle, 212. 
Foyle, Lough, iTpper, on its existence 
and disappearance, 212. 
Foyle, River, fish remains in alluvial 
clay of, 212. 
Galera barbata, muscular anatomy of, 
506. 
Galium cruciatum, found in Ireland, 
, 271. 
Granges, floatation of sand on river, 252. 
Gases, on the cause of the interrupted 
spectra, 107. 
Geological age and structure of Serpen- 
tine marble, 132. 
Glacial Period, on the formation of 
Thenardite in connexion with its date, 
2. 
Goniometer, on a new form of, 294. 
Gorilla, the muscular anatomy of, 501. 
fieat, action of, upon solutions of Hy- 
drated salts, 247. 
molecular dissociation by, 169. 
Hornblende group of minerals, note on, 
- 37. 
Hyalonema lusitanicum, Bocage, 549. 
Hydro-dynamical theorem due to 
Professor Stokes, note on, 492. 
Hygrometer, self-registering, descrip- 
tion of, 476. 
improvements in, 556. 
Illumination of microscopical objects, 7. 
Inflammation, Purser's investigations of 
Cohnheim's researches, 156. 
Inishowen, former insulation of, 212. 
Instrument for keeping up artificial 
respiration, description of, 493. 
Integrals, Hyper-elliptic, some theorems 
in the reduction of, 655. 
Ireland, additions to the tenth botanical • 
district of, 192. 
, Flora of, recent additions to, 256. 
, lakes disappeared in, 222. 
, Mosses found in (for index to 
species, vide p. 471), 329. 
, plants, new, found in, 258. 
, Sugar beet grown in, 169, 475. 
— — , Ziphius Sowerbi captured on the 
coasts of, 49. 
Lakes, vanished Irish, list of, 222. 
Light, influence of, on the electrical 
conductivity of Selenium, 529. 
Lime, solubility of, at different tempera- 
tures, 172. 
Lunar halo, inverted, and rainbow, 548. 
Magnesium, on a supposed substitution 
of Zinc for, 533. 
Man, greater muscular varieties in, than 
in lower animals, 128. 
Mechanics, Applied, notes on, '243, 492. 
Meteorology, Optical, notes on, 246. 
Micro-atmospheric researches, 13, 22. 
Microscopical objects, illumination of, 7. 
Microscopical structure of Ophite, 132. 
Mineral origin of Eozoon canadense, 
140. 
Molecular dissociation by heat, of 
compounds in solution, 167, 169. 
Mosses, synopsis of Irish (for index to 
species, vide p. 471), 329. 
Muscular anomalies in human anatomy, 
127. 
Muscular anatomy of Aonyx, 539. 
anatomy of Bradypus, 517. 
anatomy of Civet and Taya, 506. 
— '■ — anatomy of Gorilla, 501. 
Kervous action, new theory of, as 
regards the transmission of sensation 
along the nerves, 45. 
Nostoc minute, with spores, 310. 
Ophite of Skye, 132. 
Optical method for in certain cases 
determining the formation of definite' 
chemical compounds, 31. 
Optical Meteorology, Notes on, 246. 
