INDEX II. 



263 



Dewar (James) on recent estimates of 

 solar temperature, 50 ; on the tempe- 

 rature of the electric spark, 51. 



Dickson (Prof) on tlie cones of Pinus 

 pinaster, 127 ; on Sligmaria from the 

 fossiliferous strata at Auchentorlie, 

 127. 



Diffraction, Dr. T. 0. Ward on a pheno- 

 menon connected with, 45. 



Diti'raction-gi-atings, the Hon. J. W. 

 Strutt on the application of photo- 

 graphy to copy, 39. 



Dines (George) on a new hygrometer, 

 59. 



Dinitrohrombenzene, J. F. Walker on, 

 85. 



Dinobolm, T. Davidson and Prof W. 

 King on the genera Trimevella, Mono~ 

 merella, and, 100. 



Disease, graft theoiy of, Dr. J. Ross on 

 the, 152. 



Distribution of prime numbers, J, AV, L. 

 Glaisher on the law of, 19. 



Down, Prof E. Hull on the trachyte 

 porphyries of Antrim and. 111. 



Dredging- expedition, notes of a deep- 

 sea, in the Gulf of St. Lawrence, by 

 J. F. miteaves, 143. 



Dredgings in Lake Ontario, Prof. Nichol- 

 son's report on, 137. 



*DriUing-apparatus, A. Upward on, for 

 gas- and water-mains, 252. 



Dust, G. Gladstone on the, thrown up 

 by Vesuvius during the late eruption, 

 74. 



*Earth-closet, D. T. Bostel on a modi- 

 fication of the, 241. 

 -, D. Carter on a modification of the, 



242. 



Eaton (R.) on certain economical im- 

 provements in the construction of 

 locomotive engines, 243. 



Echinodermata, naked, C. Moore on the 

 presence of, in the Inferior Oolite and 

 Lias, 117. 



Eckart (W. R.) on marine propulsion, 

 243. 



Eclipse du 12 Dec. 1871, resultat de 

 ses observations dans i'lndo sur 1', 

 par Dr. Janssen, 34. 



Economic Science and Statistical Sec- 

 tion, Prof. H. Fawcett's Address to 

 the, 217. 



Education, the Rq\. E. Hale on the 

 place of geography, political and phy- 

 sical, in, 209. 



Edwardsia, Prof. Allman on the struc- 

 ture of, 132. 



Elastic solid, Dr. J. Hopkinson on the 



stresses produced in an, by inequa- 

 lities of temperature, 51. 



Electric spark, J. Dewar on the tempe- 

 rature of the, 61. 



Electricity, Dr. J. H. Gladstone and A. 

 Tribe on the mutual helpfulness of 

 chemical aflinity, heat, and, in pro- 

 ducing the decomposition of water, 

 75. 



Electrolysis of water, 0. J. Woodward 

 on a modification of Hofmaim's ap- 

 paratus for, 87. 



Elementary bodies, R. Schenk on the 

 amount of heat required to raise, from 

 absolute zero to their state of fusion, 

 82. 



Elliot (Sir Walter) on the primitive 

 weapons of ancient India, 180. 



Elm, M. Moggridge on a curious, 129, 



Engines, locomotive, R. Eaton on cer- 

 tain economical improvements in the 

 consti'uction of, 243. 



*Engiand, G. A. Lebour on the geolo- 

 gical distribution of goitre in, 115. 



, south-east of, W. Topley on the 



relation of the parish boundaries in 

 the, to great physical features, par- 

 ticularly to the chalk escarpment, 

 197. 



*English nation, A. L. Lewis on the 

 pretended identification of the, with 

 the " Lost House of Israel," 190. 



Ethers, J. A. Wanklyn on some new 

 methods of analyzing the, 85. 



Euphrates-valley route to India, W. P. 

 Andrews on the, 203. 



Europe, J. G. Jeffreys on the MoUusca 

 of, compared with those of Eastern 

 North America, 137. 



Evaluation in series of certain definite 

 integrals, J. W. L. Glaisher on the, 

 15. 



Evans (John) on the alphabet and its 

 origin, 181. 



*Everett (Prof. J. D.) on focal lines, 36 ; 

 on a difficulty in the theory of aberra- 

 tion, 36 ; on mirage, 36. 



*Evolution, the Rev. J. T. Gulick on 

 diversity of, under one set of external 

 conditions, 136. 



Factorials, J. W. L. Glaisher on the 

 function that stands in the same re- 

 lation to Bernoulli's numbers that the 

 gamma-function does to, 17. 



Fatty oils, J. Galletly on the ignition 

 of cotton by saturation with, 78. 



Fawcett (Prof H.), Address to the Sec- 

 tion of Economic Science and Sta- 

 tistics, 217. 



