m 



JlEPORTSj ETC.— INDEX OF SUBJECTS. 



Dimorphous bodies, continued. 



yet exhibit unlike physical proper- 

 ties in different portions of their 



192. 

 Epigene and pseudomorphous crystals, 



194. 

 Trimorphous bodies, 197. 

 Relation of dimorphism and molecular 

 arrangement in general, to tempera- 

 ture, electricity, and mechanical pres- 

 sure, 199. 

 Cause of dimorphism, 203. 

 Extent of dimorphism, 206. 

 Relation of the crystalline doctrine of 

 dimorphism to the chemical doctrine 

 of isomorphism, 209. 

 Desiderata, 214. 

 Dimyaria of Ireland, W. Thompson on the, 

 1843, 260; 1852,293. 



of the iEgean Sea, Prof. E. Forbes on 



the, 1843, 142, 191. 

 Dinosauria, fossil, !3ritish. Prof. Owen on, 



1841, 102. 



^ , fossil, Prof. Owen on, 1859, 164. 



Dioscorea Batatas (potato-yam), Prof. Buck- 

 man on the growth of, 1857, 211 ; 1859, 

 29 ; 1860, 43. 



Dip circle for the determination of the 

 earth's magnetic force in absolute mea- 

 sure, Rev. Dr. Lloyd on, 1858, 260. 



Diphydag, British, 1860, 232. 



Diplacanthus, fossil. Prof. Agassiz on the, 



1842, 87. 



Diplopterus, fossil, Prof. Agassiz on the, 



1842, 87; 1843, 195, 198. 

 Diprotodon of AustraUa, Prof. Owen on 



the nature and affinities of the, 1844, 



224. 

 Dipsacus sylyestris and D. fullonum. Prof. 



Buckman on the growth of, 1859, 26; 



1860, 39. 

 Dipterus, fossil, Prof. Agassiz on the, 1842, 



87; 1843, 194. 

 Discoboli, Irish, W. Thompson on the, 



1840, 395. 

 ■ of New Zealand, Sir J. Richardson on 



the, 1842, 27. 

 ' of North America, Sir J. Richardson 



on the, 1836, 218, 219. 

 Disease, Liebig's theory of, 1842, 51. 

 Diseases, sporadic and specific, Dr. W. 



Henry on, 1834, 70. 

 of large towns in Scotland, report 



on the, 1842, 196. 

 Distribution and range in depth of Mol- 



lusca and other marine animals on the 



coasts of Spain, Portugal, Barbary, Malta, 



and Soutli Italy in 1849, R. M'Andrew 



on the, 1850, 264. 

 Dodder and flax-seeds, experiments on the 



growth of the, by Prof. J. Buckman, 



1859, 23 ; 1860, 42. 

 Dolomite of Howth, chemical examination 



■ of the, by A. Gages, 1859, 68. 



, pseudo-, chemical examination ^f, by 



■ A. Gages, 1859, 70. 



Doridse, J. Alder and A. Hancock on the 

 British species of, 1844, 24, 



of the iEgean Sea, 1843, 132, 186; 



Irish, 1843, 250; 1852, 292; Frith of 

 Clyde, 1856, 50 ; West coast of North 

 America, 1856, 313; British, 1860, 220. 



Drainage, G. Rennie on the progress of hy- 

 draiilic engineering with reference to, 

 1834, 415 ; in England, 473. 



Dredging oif the Mvdl of Galloway and the 

 Mull of Cantire, &c., 1842, 213. 



• round the coasts of Anglesea, 1844, 



390. 



on the coasts of Spain, Portugal, Bar- 

 bary, Malta, and Southern Italy, 1850, 

 264. 



on the southern, western, and northern 



coasts of Great Britain, 1850, 192. 



Frith of Clyde, report of committee 



on, 1856, 47. 



■ Strangford Lough, Co. Down, by Dr. 

 G. Dickie, 1857, 104. 



committee (Belfast), report of the, 



by G. C. Hyndman, 1857, 220; 1858, 

 282; 1859, 116. 



committee (Dublin), report of the, by 



Dr. J. R. Einahan, 1858, 262 ; 1859, 80 ; 

 1860, 27. 



Dredging-papers, examples of, 1843, 180. 



Dreissena, Dr. Carpenter on the structure 

 of the shell of the, 1847, 99, 131. 



Dumas's researches on the density of gases 

 and vapours. Prof. Johnston on, 1831-32, 

 421, 



Dyeing, list of colouring matters, 1831-32, 

 5i5> 516. 



, Dr. Schunck on the colouring mat- 

 ters of madder, 1846, 24; 1847, 136; 

 1848, 57. 



Dynamics, theoretical, report on the pro- 

 gress of (from the publication of the 

 Mecanique Analytique of Lagrange in 

 1788 to the year 1857), by A. Cayley, 

 1857, I. 



Earth, on the figure of the, by G. B. Airy, 

 1831-32, 165, 178. 



r-. — , on the form of the, by W. Hopkins, 

 1847, 40. 



r , Rev. Dr. Whewell on the motion of 



heat in the, 1835, 30 ; central heat, 31. 



r- — , I'eport on the effects of long-continued 

 heat, illustrative of geological pheno- 

 mena, by Rev. W. V. Harcourt, 1860, 



175- 



•r , instructions for conducting experi- 

 ments on the temperature of the, at vari- 



."Tous depths, 1836, 291. 



, Prof. J. D. Forbes on the tempera- 

 ture of the, 1831-32, 221 ; 1840, 66. 



, magnetism of the, Prof. Christie's re- 

 port on the, 1833, 105. 



, report on the variations of the mag- 

 netic intensity of the, by General Sabine, 

 1837, I, 497; errata, 500; 1838, 318. 



— — , Prof. Forchhammer on the influence 



