242 
GENERAL INDEX. 
influence in its technical uses, W. Baker 
on the, 1863, 32 
Lead, impurities in, Dr. Zenner on, 1863, 
5 8 
--nickel in metallic, Dr. A. T. Mac- 
hattie on the presence of, 1861, 34 
.- -ores, W. Molyneux on the occur¬ 
rence of copper- and, in the Bunter 
conglomerates of Cannock Chase, 1872, 
116 
-oxide, the volatilisation of, and its 
action upon glass at low temperatures, 
T. W. Hogg on, 1889, 534 
--and platinised lead as a substitute 
for carbon and platinised silver in 
Leclanche’s, bichromate, and Smee’s 
batteries, E. T. Hardman on, 1878, 453 
--poisoning in water, A. Gordon on 
the prevention of, 1870, 60 
-- manufacture of in the northern dis¬ 
trict, report by T. Sop w ith and T. 
Richardson on the, 1863, 715 
- produce of, in the years 1845-62 
inclusive,in the counties of Cumberland, 
Durham, and Northumberland, 1863, 
722 
* -sulphide of, Dr. D. S. Price on the 
action of light upon, and its bearing 
upon the preservation of paintings in 
picture galleries, 1865, 34 
-veins of Allenheads, and other lead- 
veins of Yorkshire, Charles Moore on 
the organic contents of the, 1863, 83 
- white, a new, J. B. Hannay on, 
1889, 546 
* - white, Peter Spence on a new 
process in the manufacture of, 1866, 44 
Leaf-arrangement, note by Dr. H. Airy 
on variation of, 1874, 128 
* -forms, &c., from Alum Bay, Isle 
of Wight, W. S. Mitchell on hitherto 
unrecorded, 1865, 68 
- bed of Alum Bay, report on the, 
1866, 146 
--mining larva, H. T. Stainton on a 
new, 1861, 139 ; 1863, 106 
--organs of the flower, Dr. A. Dickson 
on some of the principal modifications 
of the receptacle, and their relation to 
the ‘ insertion ’ of the, 1868, 94 
--wearing tribe on the western coast 
of India, M. J. Walhouse on a, 1874, 
159 
Leaked (Dr. A.) on a journey to Fez and 
Mequinez, 1878, 631 
Learned societies, Prof. Leone Levi on 
the progress of, illustrative of the ad¬ 
vancement of science in the United 
Kingdom during the last thirty years, 
1868, 169 , 196 
^Learning and teaching, Joseph Payne 
on the relation between, 1868, 175 
Leasehold enfranchisement, C. Harrison 
on, 1888, 770 
^Leather manufacture of Dundee, Frank 
Henderson on the, 1867, 140 
-sole-, the manufacture of, in Bristol. 
S. Evans on, 1875, 41 
* -on the tanning of, in Bristol, 1875, 
209 
Leathern and wooden objects, some 
curious, from Tullyreagh bog, co. 
Antrim, W. J. Knowles on, 1879, 395 
Leaves, autumnal fall of, preliminary 
notes on the, by Prof. W. Hillhouse, 
1886, 700 
-curvature of the margins of, with 
reference to their growth, W. Esson on 
the, 1862, 3 
--- pinnate and palmate, Maxwell T. 
Masters on the relation between, 1861, 
148 
--- Dr. Maxwell T. Masters on certain 
influences regulating the forms of, 
1863, 97 
Leavitt (E. D. jun.) on pumping ma¬ 
chinery, 1884, 889 
Lebanon, Bev. H. B. Tristram on a bone- 
breccia with flints in, 1864, 72 
Lebour (G. A.) on the denudation of 
Western Brittany, 1869, 95 ; on some 
granites of Lower Brittany, 96 
* - on the geological distribution of 
goitre in England, 1872, 115 
- on the geological aspects of the re¬ 
sults of experiments to determine' the 
thermal conductivities of certain rocks, 
1874, 131 ; 1875, 54 ; 1876, 19 ; 1877, 
90 ; 1878, 133 ; 1879, 58 ; 1881, 126 
.-on the limits of the Yoredale series 
in the North of England, 1875, 74 
- on underground temperature, 1876. 
204 ; 1877, 194 ; 1878, 178 ; 1879, 40 : 
1880, 26 ; 1881, 90 ; 1882, 72 ; 1883, 
45 ; 1885, 93 ; 1889, 35 
-- on the changes affecting the 
southern extension of the lowest Car¬ 
boniferous rocks, 1876, 93 
——- on the occurrence of pebbles in 
Carboniferous shale in Westmoreland, 
1877, 72 ; note on the age of the 
Cheviot rocks, ib. 
-on the discovery of marine shells in 
the Gannister beds of Northumberland, 
1878, 539 
-on ‘ culm ’ and ‘ kulm,’ 1S79, 352 
- on the ‘ Geological Record,' 1880, 87 
- on the circulation of underground 
waters, 1878, 382 ; 1879, 155 ; 18S0, 87 ; 
1881, 309 ; 1882, 213 ; 1883, 147 ; 1884. 
96 ; 1885 , 38 o; 1886, 235 ; 1887, 35 S; 
1889, 71 ; 1890, 352 
-on some recent earthquakes on the 
Durham coast, and their probable 
cause, 1885, 1013 
- on the stratigraphical position of 
the salt-measures of South Durham, 
1886, 673 
