354 



Distillation, destructive, of animal 

 substances, 186. 



Dochart, Locli, on a black powder 

 which appeared on tlie surface of, 

 on the morning of 23d Xov. 1846, 

 129. 



Donaldson (Rev. J. W.) on the per- 

 sonal nomenclature of the Romans, 

 with an especial reference to the 

 Nomen of C'aius Verres, 87. 



Drainage water, on the solvent action 

 of, on soils, 28. 



Dunbar (Prof.) Examination of some 

 theories of German writers, and of 

 Mr Grote, on the authorship of the 

 Iliad and Odyssey, 154. 



Earth's atmosphere, Wollaston"s argu- 

 ment for the limitation of the, to 

 the finite divisibility of matter, 34. 



Earth's magnetic intensity, on the re- 

 lation of the variations of the verti- 

 cal component of the, to the solar 

 and lunar periods, 58. 



Earth's magnetism. On the relation 

 of the variations of the earth's mag- 

 nitism to the solar and lunar periods, 

 58. 



Earth, temperature of the, at Trevan- 

 drum, observations on the, 29. 



Earthquakes, speculation respecting 

 the cause of, 114, 115. 



Edinburgh, notes on the superficial 

 strata of the neighbourhood of, 110, 



m. 



Edinburgh Royal Observatory. See 



Observatory. 

 Elastic solids, on an instrument for 



measuring the extensibility of, 173. 



on the equilibrium of, 



294. 



Electric (Locke's) observing clock, 

 notice of, 226. 



Electric-observing, American, clock, 

 note regarding tlie, 309. 



Electrical apparatus in the Flapper 

 Skate and other Rays, on the exist- 

 ence of an, 1, 8, 9. 



Electricity, application of, as a moving 

 power to clocks, 33. 



Elliot (James) on some peculiar im- 

 pressions on the surface of certain 

 strata of greywacke schist, at 

 Goldielands, in Roxburghshire, 217. 



on the causes of local pecu- 

 liarities of temperature in different 

 parts of Great Britain, 218. 



Elton (R.) TiL.D , on the ante-Colum- 

 bian discovery of America, 291. 



Equations, differential, on the solution 

 of certain, 257. 



Equatorial instrument, practical illus- 

 tration of the adjustments of the, 

 164. 



Equilibrium of elastic solids, on the, 

 294. 



Eruption of Hecla, on the recent, and 

 the volcanic shower in Orkney, 56. 



Estimates of probability, 228. 



Eye. On a possible explanation of 

 the adaptation of the eye to distinct 

 vision at different distances, 6. 



on the gradual production of 



luminous impressions on the, and 

 other phenomena of vision, 230. 



note on the refractive and 



dispersive powers of the humours 

 of the, determined by experiment, 

 232. 



note respecting the dimensions 



and refracting power of the, 251. 



Fatty substance derived from animal 

 matter, on a, 129. 



Fixed oils, in contact with sulphur, 

 on certain products of decomposi- 

 tion of the, 134. 



Fleming (Rev, John) D.D. Remarks on 

 certain grooved surfaces of rock on 

 Arthurs Seat, 67. 



on the recent Scottish Wadre- 



pores, with remarks on the climatic 

 character of the extinct races, 82. 

 two verbal notices, (1.) on the 



geology of Arthur's Seat ; (2.) on 

 the dentition of the walrus, 98. 



notes on the superficial strata 



of the neighbourhood of Edinburgh, 

 110, 111. 

 verbal communication on fos- 



sils of the lias formation, fi'om South 

 Africa, 133. 



geological notices, (1.) addi- 

 tional examples of diluvial scratches 

 on the rocks in the neighbourhood 

 of Edinburgh ; ('2.) on the fluor- 

 spar of Aden, 159. 



on the anthracite of the Cal- 



ton Hill, 175. 



-verbal noticeofsUicious stalac- 



tites on Arthur's Seat, 216. 



Verbal notices, (1.) on the 



shell referred to by Ure in his "His- 

 tory of Rutherglen and Kilbride," 

 as a species of •' patella ;" (2.) on the 

 '■ fossU echini" of Ure, 219-220. 

 on a simple form of rain- 

 gauge, 234. 



on the physical and Scottish 



statutory limits of sea and river, 

 as applicable to salmon fisheries, 

 333. 



