242 



REPORT 1873. 



Bacterium, 1 IG ; *embiTO_logical obser- 

 vations bearing- ontlie genealogy of the 

 moUusca, IIG; on tlie structure of the 

 egg, and the early development of the 

 cephalopod Lolic/o. 131. 



Large centres of population, H. Clarke 

 on the influence of, on intellectual 

 manifestation, 186. 



*Lawson (Prof.) on plants collected by 

 the voyager Dampicr, 105 ; *on a 

 course of practical instruction in 

 botany, 105. 



Lebour (G. A.) and W. Topley on the 

 Whin Sill of Northumberland, 92; 

 and Prof. Herschel on some experi- 

 ments on the conducting^-powers for 

 heat of certain rocks, with remarks on 

 the geological aspects of the investi- 

 gation, 223. 



*Levi (Prof. L.) on the effect of the in- 

 crease of prices of certain necessaries 

 of life on the cost of living, and its 

 relation to the rates of wages and 

 salaries, 10(1. 



*Light, Drs. Dewar and MacKendrick on 

 the action of, on the retina and other 

 tissues, 126. 



■ , P. Brahani on experiments on, 



■with circularly ruled plates of glass, 36. 



Lightning-conductors, the construction 

 of. Prof Zenger on symmetric con- 

 ductors, and, 41. 



*Lic[uid waves, W. S. Davis on the re- 

 fraction of, 43. 



Lisbon steam-tramways, 1873, W. H. 

 Barlow, jun., on the, 210. 



*Lister (S. C.) on the mechanical treat- 

 ment of fibrous substances, 214. 



(T.) on birds observed in the West 



Biding of Yorkshire in former and 

 recent years, 116. 



•Livingstone East-coast aid expedition, 

 Major E. Smith on the, 173. 



Llandeilo rocks, H. Hicks on the Arenig 



. and, of St. David's, 82. 



Lobley (J. L.) on the British Palaeozoic 



_ Arcadae, 84. 



*Lockyer (J. Norman) on the results of 

 some recent solar investigations, 35 ; 

 *on the Draper-Kutherford difiraction- 

 grating, 38 ; *on the elements in the 

 sun, 65. 



*Locomotivep, R. Eaton on the working 

 of, with heated air and steam, 213. 



Loess of Northern China, Baron von 

 Richthofen on the, and its relation to 

 the salt -basins of Central Asia, 86. 



Logarithmes hyperboliques, Ch. Her- 

 mite sur I'irrationalite de la base des, 

 22. 



*Logarithuis, some suggestions, by G. 



0. Hanlon, towards the formation of 



an extended table of, 17. 

 , Eev. H. Wuce on the calculation 



of, 24. 

 Loh'f/o, the cephalopod, E. R. Lankester 



on the structure of the egg, and the 



early development of, 131. 

 *Love"tt (Major B.) on a visit to Koh- 



Khodja, 172. 

 Ludlow rocks of Shropshire, J. Hop- 



kinson on the occurrence of numerous 



species of graptolites in the, 83. 

 Lunar influence on clouds and rain, J. 



P. Harrison on, 43. 



M'Cosh (Dr. J.) on Assam and an over- 

 land communication with China, 172. 



M'^Gowen (W. T.) on the sewage of 

 manufacturing towns, 65. 



*MacKendrick and Dewar (Drs.) on 

 the action of light on the retina and 

 other tissues, 126. 



MacLachlan (R. ) on a new insect belong- 

 ing to the family Ephevurulo' , with 

 notes on the natural history of that 

 family, 118. 



*Maguetic metals, iron, nickel, and 

 cobalt, ^^^ F. Barrett on the relation- 

 ship of the, 40. 



Magnetite, artificial, J. Spiller on, 66. 



•Magnetization of iron, nickel, and 

 cobalt, W. F. Barrett on the mole- 

 cular changes that r.ccompany the, 40. 



Mammals, pleistocene. Rev. J. F. Blake 

 on additional remains of, in Yorkshire, 

 75. 



Mangaia, South Pacific, Rev. W. W. 

 Gill on coral-caves with human bones 

 in stalagmite on, 144. 



*Maps of the world, G. II. Darwin on a 

 portable globe, and on some, 167. 



*Marcoartu (A. de) on the application 

 of telegi-aphy to navigation and me- 

 teorology, 4-3. 



*Markham (C. R.) on recent arctic ex- 

 plorations, 172. 



Mathematical and Phvsical Section, 

 Prof. H. J. S. Smith's Address to 

 the, 1. 



Maxwell (Prof. J. C.) on the final stale 

 of a system of molecules in motion 

 subject to forces of any kind, 29 ; on 

 the relation of geometrical optics to 

 other branches of mathematics and 

 physics, 38. 



Mechanical Section, W. H. Barlow's 

 Address to the, 200. 



Mediterranean, Dr. Carpenter on the phy- 

 sical geography of the, co.nsideied in 



