552 



INDEX. 



on some chlorobrorniodides of (Rod- 

 well), 291. 



Sodium, on the action of, upon chino- 

 line (Williams), 536. 



Solar system, on the evolution of the 

 (Darwin), 322. 



spots, on the iron lines widened in 



(Lockyer), 348. 



Sonorous vibrations, on the conversion 

 of radiant energy into (Preece), 506. 



Spectra, on the absorption of cobalt 

 salts (Russell), 51. 



on a simple mode of eliminating 



errors of adjustment in delicate obser- 

 vations of compared (Stokes), 470. 



of gases, on harmonic ratios in the 



(Schuster), 337. 



Spectrum, action of organic substances 

 on the ultra-violet rays of the. Part 

 III. An examination of essential oils 

 (Hartley and Huntington), 1. 



■ on the influence of the molecular 



grouping in organic bodies on their 

 absorption in the infra-red region of 

 the (Abney and Festing), 416. 



Spinal nerves, note on the occurrence of 

 ganglion cells in the anterior roots of 

 the cat's (Schafer), 348. 



Spottiswoode (W.) on the 48 eo-ordi- 

 nates of a cubic curve in space, 301. 



Stenhouse (John), obituary notice of,, 

 xix. 



Stokes (Gr. Gr.), note on the reduction of 

 Mr. Crookes's expei-iments on the 

 decrement of the arc of vibration of a 

 mica plate oscillating within a bulb 

 containing more or less rarefied gas 

 458. 



on a simple mode of eliminating 



errors of adjustment in delicate obser- 

 vations of compared spectra, 470. 



Stone (E. J.) on a method of destroying 

 the effects of slight errors of adjust- 

 ment in experiments of changes of 

 refrangibility due to relative motions 

 in the line of sight, 381. 



Striation of voluntary muscular tissue, 

 upon the cause of the (Haycraft), 

 360. 



Sun-spot, on a, observed August 31, 1880 

 (Lockyer), 72, 



Temperature, on the influence of, on the 

 musical pitch of harmonium reeds 

 (Ellis), 413. 



Terminal phalanges of the digits, on the 

 ossification of the (Dixey), 63. 



Thermal conductivity of water, addi- 

 tional note to a paper on the (Bot- 

 tomley), 300. 



Thermo-electric behaviour of aqueous 



solutions with platinum electrodes, on 

 the (G-ore), 244. 

 Thin (Gr.) on Bacterium decalvans ; au 

 organism associated with the destruc- 

 tion of the hair in Alopecia areata, 

 502. 



Thin (Gr.) on the absorption of pigment 

 by bacteria, 503. 



on the Trichophyton tonsurans (the 



fungus of ringworm), 501. 



Thorpe (T. E.), note on the determina- 

 tion of magnetic inclination in the 

 Azores, 237. 



Thudichum (J. L. W.), note on a com- 

 munication made to the Royal Society 

 by Professor Roscoe, on the absence 

 of potassium in protagon prepared by 

 Dr. G-amgee, 282. 



Thymus, further note on the minute 

 anatomy of the (Watney), 326. 



Thyroid gland, researches in the minute 

 structure of the (Baber), 279. 



Tidal friction of a planet attended by 

 several satellites (Darwin), 322. 



Toroidal functions, on (Hicks), 504. 



Torsion-gravimeters of Broun and 

 Babinet r on a simplified form of the 

 (Herschel), 141. 



designed by the late J. Allan 



Broun, on gravimeters with special 

 reference to the (Herschel), 317. 



Tribe ( Alf red), experimental researches 

 into electric distribution as manifested 

 by that of the radicles of electrolytes, 

 320.. 



Trichophyton tonsurans, on the (Thin), 

 501. 



Trust funds, 106-10. 



Tyndall (J .) , action of intermittent beam 



of radiant heat upon gaseous matter, 



307. 



further experiments on the action 



of an intermittent beam of radiant 

 heat on gaseous matter ; thermometric 

 measurements,. 478. 



Ultra-violet rays of the spectrum, action 

 of organic substances on the, Part 

 III. An examination of essential oils 

 (Hartley and Huntington), 1. 



Unwin ( W. C.) on the friction of water 

 against sohd surfaces of different 

 degrees of roughness, 54. 



Urine, researches into the colouring- 

 matters of human (MacMunn), 26. 



further researches into the colour- 

 ing-matters of human (MacMunn), 

 206. 



Urobilin, account of the separation of 

 (MacMunn), 26. 



Yice-Presidents appointed, 141. 



