256 
GENERAL INDEX 
^Lubricants, the action of, Prof. 0. 
Reynolds on, 1884, 622 
Lucas (J.) on the hydrogeological 
survey of England, 1878, 692 
-on the quantitative elements of hy¬ 
drogeology, 1879, 499 
-on some vestiges of the ancient 
forest of part of the Pennine chain, 
1881, 680 ; on an organisation for the 
systematicgauging of the wells, springs, 
and rivers of Great Britain, 781 
Lucerne, Lake of, J. J. Walker on a recent 
description of an iris seen in the, 1864, 
13 
Lucifer and other matches ignited by 
friction, Prof. F. A. Abel on some results 
of experiments on, 1863, 32 
Lucretius and Democritus, T. M. Lind¬ 
say and W. R. Smith on, a question of 
priority in the kinetical theory of 
matter, 1871, 30 
Ludlow rocks of Shropshire, J. Hopkinson 
on the occurrence of numerous species 
of Graptolites in the, 1873, 83 
Luff (A. P.) on the chemistry of some 
of the lesser-known alkaloids, especially 
veratria and bebeerine , 1878, 105 ; 
1879, 133 
Lugard (Capt.), Nyassaland and its 
commercial possibilities, 1889, 665 
Luke (R.) on Luke’s patent safety-facing 
point lock, for securing railway facing- 
points, 1874 ,224 
*Lumbricus terrestris, Dr. Rolleston on 
certain points in the anatomy of, 1865, 
110 
Lumholtz (C.), the present and future 
of Queensland, 1889, 667 
Lumiere, Prof. Morren sur une action 
particuli&re de la, sur les sels d’argent, 
1868, 19 
Luminous meteors, report on, 1861, 1 ; 
1862, 1 , 527 ; 1863, 209 ; 1864, 1 ; 1865, 
57 ; 1866, 16 ; 1867, 288 ; 1868, 344 ; 
1869, 216 ; 1870, 76 ; 1871, 26 ; 1872, 
57 ; 1873, 349 ; 1874, 269 ; 1875, 199 ; 
1876 , 119 ; 1877 , 98 ; 1878, 258 ; 1879, 
76 ; 1880, 39 ; 1881, 290 
-—_ see ‘ Meteors, luminous ’ 
Lunar activity or quiescence, W. R. Birt 
on the present state of the question 
relative to, 1870, 20 
-craters, W. R. Birt on a group of, 
imperfectly represented in lunar maps, 
1862, 9 
- disturbance of gravity, the measure¬ 
ment of the, report on, 1880, 25 ; 1881, 
93 ; 1882,95 
-influence on clouds and rain, J. P. 
Harrison on, 1873, 43 
-mountains, the Alps, W. R. Birt on 
the selenographical relations between 
the chain of, with the Mare Imbrium 
and the Mare Frigoris, 1863, 3 
Lunar objects suspected of change , report 
of the Committee for discussing observa¬ 
tions of, 1871, 60 ; 1872, 245 
-plain near the Montes Hercynii, Dr. 
Lee on an extensive, proposed to be 
named Otto Struve, 1864, 6 
-spot, Werner, Rev. T. W. Webb on a 
suspected change of brightness in the, 
1864, 8 
* - theory, some recent advances in 
the, Prof. J. C. Adams on, 1877, 31 
-tints and spots and shadows on 
Plato, W. R. Birt on secular variations 
of, 1869, 15 
Lunatics and their property, the care of, 
the assimilation of the law of England, 
Scotland, and Ireland as to, Dr. W. N. 
Hancock on, 1879, 493 
*Lung, the human, the intimate structure 
of, Dr. Waters on, 1870, 143 
Lunge (Prof.) *on the composition of 
some coke oven tars of German origin, 
1887, 640 ; *a new apparatus for con¬ 
densing gases by contact with liquids, 
ib. 
Lungs, W. Turner, on a supplementary 
system of nutrient arteries for the, 
1864, 129 
* -Dr. W. Stirling on the nervous 
apparatus of the, 1876, 163 
*Lupton (Prof. A.) on the pneumatic 
distribution of power, 1890, 954 
Luray (Virginia, U.S.A.), the caverns of, 
Chev. R. E. Reynolds on, 1888, 662 
Luroth (Prof.) on a method for measur¬ 
ing the height of clouds, 1883, 422 
Lustre, binocular, Sir David Brewster on, 
1861, 29 
*Lutken (Dr. Christian) on some recent 
additions to the Arctic fauna (a new 
Antipathes and a new apodal Lophioid), 
1871, 133 
Luxmoore (E. B.) on the caves of North 
Wales, 1886, 219 ; 1887, 301 
Lybian Desert, Dr. G. Schweinfurth on 
the oases of the, 1874, 173 
Lychnis diurna, Miss Becker on altera¬ 
tion in the structure of, observed in 
connection with the development of a 
parasitic fungus, 1869, 106 
*Lycopods, the life-history of, Dr. M. 
Treub on, 1887, 763 
Lyell, Sir Charles, a few notes on his 
‘ Antiquity of Man,’by John Crawfurd, 
1863, 136 
- Presidential Address at Ba th, 1864, l.c 
- on exploring Kent's Cavern, Devon¬ 
shire, 1865, 16; 1866, 1 ; 1867, 24 ; 
1868 , 45 ; 1869, 189 ; 1870, 16 ; 1871, 
1 ; 1872, 28 ; 1873, 198 ; 1874, 1 
- on the rate of increase of under¬ 
ground temperature, 1868, 510 ; 1869, 
176 ; 1870, 29 ; 1871, 14 ; 1872, 128 ; 
1873, 252 ; 1875, 14 
