SECTIONS.— INDEX OP SUBJECTS. 



265 



Lenses, diamond, topaz, and rock-crj 

 best suited for, by Sir D. Brewster, 1860, 8. 



, on a machine for polishing specula 



for, bj Dr. E. Greene, 1856, 24. 



, on a new form of, and their applica- 

 tion to the construction of two telescopes 

 or microscopes of exactly equal optical 

 power, by Sir D. Brewster, 1849, 6. 



of the compound object-glasses of mi- 

 croscopes, on the centering of the, by Sir 

 D. Brewster, 1857, 4. 



Lepadidaa, E. Grarneron the structure of the, 

 1860, 130. 



Lepidoptera, effect of temperature and peri- 

 odicity on the development of, by Dr. 

 Yerloren, 1860, 123. 



, Irish, list of additions to, by E. 



BirchaU, 1857, loi. 



Lepidopterous (micro-) larva, H.T. Stainton 

 on some peculiar forms amongst the, 1860, 

 122. 



—— parasite on the body of the firefly, 

 J. O. Westwood on a, 1860, 124. 



Lepidosiren, Dr. Melville on the, 1847, 78. 



, on two specimens of, from Macartney 



Island, 1841, 72. 



Lepidotus, Prof. Owen on the teeth of, 1838, 

 142. 



Lepismidaj, on the homologies of the, by 

 Prof. Dickie, 1855, no. 



Lepralia sinuosa, L. Barleei, L. canthari- 

 formis, and L. umbonata, Gr. Busk on, 

 1859, 145, 146. 



Leprosy, Dr. Hancock on, 1837, 128. 



Leptocephalidse, Prof. V. Carus on the, 1860, 

 125. 



Leptocephalus vitreus, Prof. KoUiker on, 



1855, III. 



Lepton squamosum, J. Alder on the animal 

 of, 1847, 73. 



Leslie's hygrometer with a new scale, II. II. 

 Watson on the use of, 1834, 569. 



Lesmahago and Douglas coal-field, J. Bryce 

 on the, 1850, 77. 



L'Estrange's (F.) curved drill catheter, notice 

 of, 1835, 106. 



Lestris, E. Backhouse on the annual ap- 

 pearance of some of the tribe on the Dur- 

 ham coast, 1838, 108. 



Leucine and tyrosine in the pancreatic 

 fluids and contents of the intestine, Prof. 

 KoUiker on, 1855, 124. 



Leveling stave, Prof. Willis on an im- 

 proved, 1838, 154. 



Levelings, barometrical, in the Madras Pre- 

 sidency, by General Cull en, with observa- 

 tions by Colonel Sykes, 1847, 42. 



by the android metallique from the Me- 

 diterranean Sea by Joppa to Samaria, 

 through Jerusalem, by H. Poole, 1856, 44. 



from Jerusalem through Hebron to tlie 



Dead Sea, compared with the level of the 

 Mediterranean Sea at Joppa, by H. Poole, 



1856, 44. 



— — from Jerusalem to the Dead Sea by 

 Nebi Mousa, by H. Poole, 1856, 44. 



Levelings along the west shore of the Dead 

 Sea, commencing at the south end from 

 Usdum to Jericho, by H. Poole, 1856, 45. 



from Jericho to Jerusalem, by H. 



Poole, 1856, 46. 



by the android metallique in the Lake 



district, Westmoreland, 1856, 46. 



Levels of land and sea, statement of Com- 

 mittee for ascertaining the, 1837, 59. 



taken in Jerusalem with the aneroid 



barometer, Capt. W. Allen on, 1854, 116. 



Lias formation. Prof. Strickland on the 

 genus Cardinia as characteristic of the, 

 1841, 65. 



in the neighbourhood of Grantham, 



Eev. P. B. Brodie on the, 1850, 74, 76. 



, lower, in the south of England, Dr. 



T. Wright on the, 1860, 108. 

 , lower, Prof. Buckman on the plants of 



the " insect limestone " of the, 1848, 66. 

 , middle and upper, of the west of 



England, C. Moore on the, 1856, 70. 

 of Gloucestershire, Eev. P. B. Brodie 



on the discovery of insects in the lower 



beds of the, 1842, 58. 

 of Gloucestershire, Prof. Buckman on 



some remains of the fossil Sepia in the, 



1848, 66. 



of Gloucestersliire, Worcestershire, 



and Warwickshire, on some new species 

 of corals in the, by Eev. P. B. Brodie, 

 1856, 64. 



, Eev. P. B. Brodie on the stratigra- 



phical position of certain species of corals 

 in the, 1860, 73. 



of Somersetshire, notice of Ichthyo- 

 saurus tenuirostris from the, 1831-32, 587. 



rock, lower, on the evidence of a reef 



of, extending from Eobin Hood's Bay to 

 Flamborough Head, by Capt. Woodall. 

 1856, 80. 



Liassic, triassic, ooHtic, and Permian for- 

 mations, E. Hull on the south-easterly- 

 attenuation of the, 1856, 67. 



Lichen esculentus, of Algiers, 1849, 71. 



Lichens, British, notice of some, yieldinff 

 dye, 1853, 37. 



, colorific, J. Bedford on, 1858, 45, 



, Prof. Liebig on a white crystalline 



substance obtained from, 1841, 53. 



, on the genus Abrothallus, by Dr. W, 



L. Lindsay, 1856, 88. 



Liebig' s apparatus for the analysis of organic 

 substances, Prof. Hess on a modification 

 of, 1839, 57. 



mineral theory, J. B. Lawes and Dr. 



J. H. Gilbert on agricultural chemistry 

 in relation to, 1851, 45. 



Life, human, on the forces concurring in 

 the phenomena of, by Dr. W. Addison, 

 1847, 89. 



assurance, on the mortality of the pro- 

 vident classes in this country and on the 

 Continent, 1850, 151. 



, duration of, in the members of the 



several professions, 1846, 99. 



