240 



REPORT — 1870. 



Cyanogen, Thomas Fairley on, 54. 



Dales, J. Clerk Maxwell on liills and, 

 17. 



*Date-palm, Prof. A. Dickson on the 

 embryo of the, 115. 



Davis (A. S.) on the distribution of 

 cometic perihelia, 22. 



Dawkins (W. Boyd) and G. Busk on the 

 discovery of platycneniic men in Den- 

 bighshire, 148 ; on the exploration of 

 the Victoria Cave, Settle, Yorkshire, 

 148. 



Deacon (George F.) on the efficiency of 

 furnaces and mechanical firing, 211. 



Deacon (Henry) on a new chlorine pro- 

 cess without manganese, 54. 



Decimal money, W. Westgarth on, and 

 a common international unit, 205. 



Decomposition, reciprocal, J. H. Glad- 

 stone on, viewed with reference to 

 time, 57. 



*De Meschin (Dr. Thomas) on the impo- 

 licy, on economic grounds, of convert- 

 ing the national debt into terminable 

 annuities, 196; on the compulsory 

 conversion of substantial leaseholds in 

 towns into freeholds, 19G. 



Denbighshire, G. H. Morton on tlie 

 mountain limestone of Flintshire and 

 part of, 82. 



, W. B. Dawkins and G. Busk on 



the discovery of platycnemic men in, 

 148. 



*Dendy(W. C.) on the shadows of genius, 

 149. 



Denton (J. Bailey), some remarks on the 

 extent to which existing works and 

 practice militate against the profitable 

 utilization of sewage, 212. 



Desert flora of North America, Dr. C. C. 

 Parry on the, 122. 



*Dewar (.Tames) on thermal equivalents 

 — 1. Fermentation ; 2. Oxides of chlo- 

 rine, 54. 



'Diamonds of South Africa, Prof. J. 

 Tennant on the, 88. 



*Dickson (Prof. Alexander) on the em- 

 bryo of the date-palm, 115. 



Dip-circle, Dr. J. P. Joule on a new, 

 25. 



* Dixon (W. Hepworth) on the Holy 

 Islands in the White Se;i, 109. 



Dohrn (Dr. Anton) on the foundation 

 of zoological stations, 115. 



*Duncan (Prof. P. M.) on the geologi- 

 cal changes which have occurred since 

 the first traces of man in Europe, 149. 



Dust as a ferment, C, P. C. Tichborne on, 

 65. 



Dynamic theory of heat, II. Whiteside 

 Cook on certain objections to the, 38. 



Earth's climate, R. A. Peacock on some 

 future and past ch.anges in the, 82. 



eccentricity, Alfred R. Wallace 



on the, and the precession of the 

 equinoxes, illustrating their relation 

 to geological climate and the rate of 

 organic change, 89. 



Earthworks at Wainfleet, Lincolnshire, 

 the Rev. C. Sewell on certain remark- 

 able, 157. 



Eaton (Richard) on certain economical 

 improvements in obtaining motive 

 power, 215. 



Ebalia, 0. W. Peach on an, new to the 

 British list, 122. 



*Echinoderms, Prof. Wj'ville Thomson 

 on some of the, of the expedition of 

 H.M.S. ' Porcupine,' 128. 



Economical and Statistical Section, 

 Prof Jevons's Address to the, 178. 



Electric light, W. Ladd on an improved 

 lantern for lecture demonstrations 

 with, 2G. 



time-signal at Port Elizabeth, S, 



Alfred Varley on the, 27. 



Electro-deposition of copper and brass, 

 W. II. Walenn on the, 07. 



Electro-magnetic anenrometer, John J. 

 Hall on a new, and the mode of using 

 it in registering the A-elocity and pres- 

 sure of the wind, 35. 



'Electrometer, Prof Sir W. Thomson on 

 a new absolute, 20. 



Elementary Education Bill, E. Renals on 

 mechanics' institutions and tlie, 200. 



Elephants, Dr. Leith Adams on newly 

 discovered species of, 69. 



Elliot (Sir Walter) on the habits of tlie 

 Indian rock-snake (Pi/thon molurus), 

 115. 



Ellis (J. Walter) on the decline of small 

 farmers in Yorkshire and Lancashire, 

 the cause and effect, 190. 



Ellis (the late R. Leslie) on Boole's 

 'Laws of Thought,' 12. 



Emigration, T. A. Welton on inimigi-a- 

 tion and, as afl'ecting the increa.se of 

 population in England and Wales, 

 203. _ 



Endemic diseases, Dr. T. Moffat on geo- 

 logical systems and, 80. 



England, east of, S. \. Wood and F. W. 

 Ilarmcr on the pal.icontological aspects 

 of the middle glacial formation of the, 

 and their bearing upon the age of the 

 middle sands of Lancashire, 90. 



Equinoxes, precession of the, A. R. 



