INDEX to VOL. XXXI. 



ABNEY (W.deW.) and Lieut.-Colonel 

 Festing on the influence of the mole- 

 cular grouping in organic bodies on 

 their absorption in the infra-red region 

 of the spectrum, 416. 



Absorption, on ' the influence of the 

 molecular grouping in organic bodies 

 on their, in the infra-red region of 

 the spectrum (Abney and Festing), 

 416. 



Absorption spectra of cobalt salts, on the 

 (Russell), 51. 



Actinometrical observations made in 

 India at Mussooree and Dehra in Oc- 

 tober and November, 1879 (Hen- 

 nessey), 154. 



Action of organic substances on the 

 ultra-violet rays of the spectrum : 

 Part III (Hartley and Huntington), 1. 



Address of the President, 74. 



Aleurone grains, on the chemical compo- 

 sition of (Vines), 59. 



Alopecia areata, on Bacterium decalvans ; 

 an organism associated with the de- 

 struction of the hair in (Thin) , 502. 



Altitude, experiments on the influence 

 of, on respiration (Marcet), 418. 



Anniversary meeting, 73. 



Ansted (David Thomas), i. 



Atkinson (R. W.) on the diastase of 

 koji, 523. 



Auditors elected, 37. 



report of, 73. 



Azores, note on the determination of 

 magnetic inclination in the (Thorpe), 

 237. 



Baber (E. C), researches on the minute 

 structure of the thyroid gland, 279. 



Bacteria, on the absorption of pigment 

 by (Thin), 503. 



Bacterium decalvans, on (Thin), 502. 



Bell (Oraham) on methods of preparing 

 selenium and other substances for 

 photophonic experiments, 72. 



Beresford-Hope (A. J. B.), admitted, 

 59. 



Beryllium (glucinum), on the essential 

 properties of (Nilson and Pettersson), 

 37. 



Bilirubin, account of the artificial pro- 

 duction of the colouring-matters of 

 human urine from (MacMunn), 206. 



Bimodular method, on an improved, of 

 computing natural and tabular loga- 

 rithms and anti-logarithms to twelve 

 or sixteen places with very brief tables 

 (Ellis), 381. 



Bottomley (J. T.), additional note to a 

 paper " On the thermal conductivity of 

 water," 300. 



Broun (J. A.) on gravimeters, with 

 special reference to the torsion -gravi- 

 meter designed by the late (Herschel), 

 317. 



Candidates for election, list of, 485. 

 Capillary electroscope, phenomena of the 



(Gore), 295. 

 Carnelley (T.) , preliminary note on the 



existence of ice and other bodies in the 



solid state at temperatures far above 



their ordinary melting points, 284. 

 Chinoline, on the action of sodium upon 



(Williams), 536. 

 Chlorobromiodides of silver, on the 



effects of heat on some (Rodwell), 



291. 



Climates, on the secular inequalities in 

 terrestrial, depending on the perihe- 

 lion longitude and eccentricity of the 

 earth's orbit (Haughton), 473. 



Cobalt salts, on the absorption spectra 

 of (RusseU), 51. 



Cochlea of the Ornithorhynchus platypus 

 compared with that of ordinary mam- 

 mals and of birds (Pritchard), 149. 



Colour-blind, how do the, see the diffe- 

 rent colours ? (Holmgren) 302. 



Colouring-matters of human urine, fur- 

 ther researches into the (MacMunn), 

 206. 



Colours, revision of Newton's table of 

 (Remold and Riicker), 524. 



