566 



INDEX. 



anemometer by experiments with a 



whirling machine, 286. 

 Roscoe (H. E.), note on the specific 



gravity of the vapours of the chlorides 



of thallium and lead, 426. 

 Russell (W. H. L.) on certain definite 



integrals, 129. 



Saline solutions, further note on super- 

 saturated (Tomlinson), 121. 



Sanders (A.), contributions to the ana- 

 tomy of the central nervous system 

 in vertebrate animals. Part I. Ich- 

 thyopsida. Section 1. Pisces. Sub- 

 section 1. Teleostei, 415. 



Sanderson (J. B.) and F. J. M. Page, 

 experimental results relating to the 

 rhythmical and excitatory motions of 

 the ventricle of the heart of the frog, 

 and of the electrical phenomena which 

 accompany them, 410. 



Schafer (E. A.) elected, 447. 



■ , observations on the nervous system 



of Aurelia aurita, 16. 



Schulze's mode of intercepting the ger- 

 minal matter of the air (Tyndall), 99. 



Schuster (A.) on the spectra of metal- 

 loids : spectrum of oxygen, 383. 



Sea-water and ice, observations on Arctic 

 (Moss), 446, 544. 



Sedgwick (A.) and F. M. Balfour, on the 

 existence of a rudimentary head- 

 kidney in the embryo chick, 443. 



Septic organism, on the life-history of a 

 minute, with an account of experi- 

 ments made to determine its thermal 

 death point (Dallinger), 332. 



Simpson (M.). Chemical notes, 118. 



, on the formation of chlor-iodide 



and brom-iodide of ethylidene, 424. 



Skull in the common snake (Tropido- 

 notus natrix), on the structure and 

 development of the (Parker), 13. 



Sladen ( W. P.) on Astrophiura permira, 

 an Echinoderm-form intermediate be- 

 tween Ophiuroidea and Asteroidea, 

 456. 



Smith (Eight Hon. W. H.) elected, 94 ; 



admitted, 447. 

 Snake, on the structure and development 



of the skull in the common (Parker) , 



13. 



Solar eclipse of July 29, 1878, facilities 

 of conveyance offered to observers by 

 the Pennsylvania Railroad Company, 

 284. 



Sonorous vibrations, experiments on the 

 colours shown by thin liquid films 

 under the action of (Taylor), 71. 



, on the action of, in varying the 



force of an electric current (Hughes) , 

 362. 



Specific gravity of the vapours of the 



chlorides of thallium and lead (Roscoe), 

 426. 



Spectra of metalloids : spectrum of oxy- 

 gen (Schuster), 383. 



of stars and nebulae, note on the 



bright lines in the (Lockyer) , 50. 



Spectrum, the acceleration of oxidation 

 caused by the least refrangible end of 

 the (Abney), 291 ; Note II, 451. 



Spectrum analysis, researches in, in con- 

 nexion with the spectrum of the sun 

 (Lockyer), 49, 279 ; No. Y, 409. 



Spheroids, on the bodily tides of viscous 

 and semi-elastic (Darwin), 419. 



Spirillum, on the life-history of (G-eddes 

 and Ewart), 481. 



Spottiswoode (W.) on stratified dis- 

 charges. V. Discharge from a con- 

 denser of large capacity, 60. 



Sprengel (H.) elected, 447. 



Stars and nebulae, note on the bright 

 lines in the spectra of (Lockyer), 50. 



Stewart (Balfour) on the diurnal range 

 of the magnetic declination as recorded 

 at the Trevandrum observatory, 81. 



on the variations of the diurnal 



range of the magnetic declination as 

 recorded at the Prague observatory, 

 389. 



Stokes (Gr. G-.) on an easy and at the 

 same time accurate method of deter- 

 mining the ratio of the dispersions of 

 glasses intended for objectives, 485. 



Stratified discharges. Y. Discharges 

 from a condenser of large capacity 

 (Spottiswoode), 60. 



Stress, effects of, on the magnetization 

 of iron, nickel, and cobalt (Thomson), 

 439. 



Stresses in rarefied gases arising from 

 inequalities of temperature (Maxwell), 

 304. 



Stylasteridse, on the structure of the, a 

 familv of hydroid stony corals (Mose- 

 ley), 141. 



Sun, note on the existence of carbon in 

 the coronal atmosphere of the (Lock- 

 yer), 308. 



, researches in spectrum analysis in 



connexion with the spectrum of the 

 (Lockyer 1 ), 49, 279 ; No. Y, 409. 



Supersaturated saline solutions, further 

 note on (Tonilinson) , 121. 



Supersaturation, on the function of the 

 sides of the vessel in maintaining the 

 state of (Tomlinson) , 189. 



Sylvester (J. J.) on the limits to the 

 order and degree of the fundamental 

 invariants of binary quantics, 11. 



Symons (Gr. J.), elected, 447 ; admitted, 

 447. 



Taylor (Sedley), experiments on the 



