INDEX. 



525 



Spectrum-microscope, on a new arrange- 

 - ment of binocular, 443. 

 Spinel, on the structure of, 294. 

 JSponges, vitreous, from the North Atlantic, 

 195. 



Stars, note on the heat of, 309. 



, of multiple systems of, 51. 



, of solitary, 47. 



, physical constitution of the, 1. 



Stenhouse (J.), products of the destruc- 

 tive distillation of the sulphobenzo- 

 lates (No. II.), 62, 103. 



Stereoscope, notice of, 145. 



Stewart (B.), a preliminary investigation 

 into the laws regulating the peaks and 

 hollows, as exhibited in the Kew mag- 

 netic curves for the first two years of 

 their production, 462. 



, remarks on Senhor Capello's curves 



of declination disturbance, 239. 



, Rumford medal awarded to, 149. 



and Loewy (B.), an account of ex- 

 periments made at the Kew Observa- 

 tory for determining the true vacuum- 

 and temperature-corrections to pendu- 

 lum observations, 488. 



Stokes (Gr. Gr.), note on Governor Hen- 

 nessey's account of the eclipse of the 

 sun, 88. 



Stoney (Gr. J.) on the physical constitution 

 of the sun and stars, 1, 103. 



Stonyhurst, comparison with Kew of cer- 

 tain curves of the declination magneto- 

 graphs, 236. 



Sulphobenzolates, products of the destruc- 

 tive distillation of (No. II.), 62. 



Sulphobromide of phenylene, 65. 



Sulphocyanic ethers, compounds isomeric 

 with (II.), 67. 



Sulphocyanide of ethyl, transformations 

 of, and ethylic mustard-oil, 269. 



, action of water and hydrochloric 



acid on, 273. 



, action of sulphuric acid on, 274. 



Sun, account of spectroscopic observa- 

 tions of the eclipse of August 18,1868,74. 



— — , eclipse of, observations of, 104, 120, 

 124, 125, 127 ; of 1851, Mr. Babbage's 

 note on, 133 ; notice of, 137. 



, of the distribution and periodicity 



of the spots in the, 42. 



, outer atmosphere of the, 17 ; of 



clouds in the, 39. 



, physical constitution of the, 1. 



, preliminary note of researches on 



gaseous spectra in relation to the phy- 

 sical constitution of the, 288. 



, spectroscopic observations of: No. 



II., 128, 131 f No. III., 350; No. IV., 

 415,506. 



Swedish arctic expedition, further parti- 

 culars of, 91, 129, 141. 



Telegraphic weather- signals, 137. 

 Telescope, great Melbourne, appendix to 



the description of, 315. 

 , great, account of the building 



in progress of erection at Melbourne 



for the, 328. 

 Temperature, on the, of the human body 



in health, 287. 

 , on the effect of changes of, on the 



specific inductive capacity of dielectrics, 



470. 



of the human body when at rest, on 



some of the minor fluctuations in the, 

 and their cause, 419. 



Terrestrial magnetism, suggestion con- 

 cerning a decennial period in, 144. 



, on the diurnal and annual inequa- 

 lities of, at Greenwich, 1858 to 1863, 

 163. 



, observations of the absolute di- 

 rection and intensity of, at Bombay, 

 426. 



Thermometer, note on a self-registering, 



adapted to deep-sea soundings, 482. 

 Thermometers, on the behaviour of, in a 



vacuum, 319. 

 Thomson (Sir W.) on the fracture of 



brittle and viscous solids by ' shearing,' 



312. 



on a new astronomical clock and 



pendulum governor for uniform motion, 

 468. 



Thudichum (J. L. W.), researches con- 

 ducted for the medical department of 

 the Privy Council at the Pathological 

 Laboratory of St. Thomas's Hospital, 

 253. 



Tolylic mustard-oil, 70. 



Tomlinson (C.) on the action of solid 

 nuclei in liberating vapour from boiling 

 liquids, 240. 



Turacine, an animal pigment containing 

 copper, researches on, 436. 



Tyndall (J.) on a new series of chemical 

 reactions produced by light, 92, 104. 



on the blue colour of the sky, the 



polarization of skylight, and on the po- 

 larization of light by cloudy matter 

 generally, 223. 



5 note on the formation and pheno- 

 mena of clouds, 317. 



Utrecht, dip observations at, 284. 



Vacuum, on the behaviour of thermome- 

 ters in, 319. 



- — - and temperature-corrections to pen- 

 dulum observations, 488. 



Vice-presidents appointed, 155. 



Vienna, dip bservations at, 284. 



Voltaic circuit, instruments for determin* 

 ing the constants of, 146. 



