Lankester (Dr. E.) on the registration of 
periodic phenomena, 113; on the alter- 
nation of generations and partheno- 
genesis in plants and animals, 7b. 
Lawes (G. B.) on the assimilation of 
nitrogen by plants, 51. 
Leach (Captain) on the use of percussion 
lights for preventing collisions at sea 
and on railways, 181. 
_ Lee(Dr.) on the discovery of the Asteroid, 
No. 46, by Mr. Pogson, at Oxford, 31. 
_ Legumine, on the proportion of organic 
phosphorus in, 60. 
Lenses, on the centring of the, of the com- 
pound object-glasses of microscopes, 4. 
Lepidoptera, on a list of additions to Ivish, 
101. 
_ Leslie (Prof.) on professional incomes, 
163; on competition at the bar, 2b. 
Life, on a formula for ascertaining the 
expectation of, 172. 
Light, 4. 
Lignite of Ballymacadam, on the, 94. 
Lima, on routes from, to the navigable 
branches of the Amazon, 145. 
Limerick, on carboniferous limestone fos- 
sils from the county of, 62; on a new 
fossil fern from the coal-measures near 
Glin in, 68. 
_ Limestone, on the jointing and dolomiti- 
zation of the lower carboniferous, in the 
neighbourhood of Cork, 68. 
Lister (Joseph) on the flow of the lacteal 
' fluid in the mesentery of the mouse, 114. 
_ Liverpool, on the ages of the population 
min, 158. 
_ Lives, on annuities on, 172. 
_ Livingstone (Rev. Dr.) on discoveries in 
Southern Africa, 146. 
Lloyd (Dr.) on the purification of large 
__ towns by means of dry cloace, 538. 
_Lochgoilhead, onthe chemical composition 
_ of an ancient iron slag found at, 52. 
Locke (John), the land-revolution in Ire- 
~ land, 163. 
_ Loomis (Prof.) on the relative accuracy of 
the different methods of determining 
geographical longitude, 25 ; on certain 
electrical phenomena in the United 
States, 32. 
Lotus or sacred bean of India, on the, 96. 
Lunar physics, on, 28. 
Lyons (Prof.) on the importance of intro- 
a acing a new and uniform standard of 
_ micrometric measurement, 115; on Dr. 
Hardy’s instrument for the local appli- 
_ ation of chloroform, ib. 
— CP 
—— 
Maeren (M. Corr Vander) on the progress 
of free-trade on the continent, 164. 
+ 
INDEX II, 
211 
Macadamized roads, on, 180. 
Macdonald (Dr.) on the cranium of os- 
seous fishes and its vertebrate and arti- 
culate homologies, 104; on the sources 
and origins of human racesand theirlan- 
guages, more especially the Celtic, 146. 
Macgregor (John), early methods of pro- 
pelling ships, 182. 
Macrocephali of Hippocrates, on the, 146. 
Magnetic disturbances at Point Barrow, 
on the amount and frequency of the, 
14, 
Magnetism, 11. 
Mallet (Prof. J. W.) on the atomic weight 
of aluminium, 53; on Prof. Tuomey’s 
geological map of Alabama, 78. 
Mallet (R.) on the construction of the 
36-inch mortars made by order of Her 
Majesty’s Government, 186. 
Manchester, on the ages of the population 
in, 158. 
Maps, on the application of a decimal 
scale to the construction of, 145; on the 
application of the decimal scale in the 
construction of, 172. 
Markham (Clements R.) on the final Arc- 
tic searching expedition, 146. 
Marriages, on the proportion of, at dif- 
ferent ages of the sexes, 156. 
Martin (T.) on certain properties of the 
radii of curvature of curves and surfaces; 
and their application to the method of 
polar reciprocation, 4. 
Masters (T. Maxwell), contributions to 
vegetable teratology, 97. 
Mathematics, 1. 
M°Cormac (Dr. H.) on the influence of 
inadequate or perverted development 
in the production of insanity, disease, 
want and crime, 164. 
M<‘Donnell (Dr. Robert) on the valvular 
apparatus connected with the vascular 
system of certain abdominal viscera, 
115. 
M*Namara (Dr.) on coloured confection- 
ary, 55. 
Measures, on the use of prime numbers 
in English, 174. 
Mechanical science, address by the Pre- 
sident of the Section, 175. : 
Medusz, on British naked-eyed, 103. 
Melting-points of bodies, on the, 53. 
Meneghini (Prof. Car. G.) on the recent 
advances of palzontological discovery 
in Tuscany, 79. : 
Mercury, ammonio-iodide of, 55. 
Metals, on a new method of forming am- 
monio-iodide of, 55. 
Meteorological observations made at sea, 
on, 28. 
14* 
