INDEX I. 



117 



Seeds, influence of light on the germination 

 of, 29. 



, on the growth and vitality of, 94. 



Shells, microscopic structure of, 1 . 



, condition of the calcareous matter in, 3. 



, animal basis of, 4. 



, prismatic cellular structure of, 4. 



— — , membranous substance in, 9. 



, nacreous structure in, 13. 



■ , tubular structure in, 14. 



, cancellated structure in, 14. 



Sheppey,list of species of the bony fish of,304. 



Ships, on the form of, 391. 



Siberia, on the ornithology of, 185. 



Slate, metamorphosis of the Scandinavian 

 alum, 155. 



, analysis of, from Bornholm and Opsloe, 



162, 168. 



Smoke, on the prevention of, 100, 114, 118. 



, description of boiler used for the, 115. 



Spain, on the ornithology of, 184. 



Spiders, scopulae of, 62. 



Stars, nomenclature of the, 32. 



Steam-engines, experiments on, 91. 



Storm clock, 142. 



papers, specimen of, at the Kew Obser- 

 vatory, 134. 



Strickland (H. E.) on the growth and vita- 

 lity of seeds, 94. 



on the recent progress and present 



state of ornithology, 160. 



Sweden, magnetic survey of, 148. 



Telescopes, construction of large reflecting, 

 79. 



Temperature of Toronto and Prague, on the, 

 43. 



, variations of the, 58, 59. 



, at Greenvrich, 60. 



, differences of, at Greenwich and To- 

 ronto, 61. 



, subterranean, in Ireland, 221. 



Terebratula, on the fossil species of the ge- 

 nus, 17. 



psittacea, on the shell of, 16. 



Terminology, external, 209. 



Terrestrial magnetism, on publications rela- 

 ting to, 149. 



Thermometers used at the Kew Observatory, 

 on the, 127. 



Toronto, meteorology of, 42. 



Trinity College (the Master of) on simultane- 

 ous magnetical and meteorological obser- 

 vations, 143. 



Tritoniadce, 25, 26. 



UraUte from the Ural, if identical with that 

 from Arendal in Norway, 165. 



Vane used at the Kew observatory, on the,l 29. 



Vapour, aqueous, contained in the atmo- 

 sphere of Toronto, 47. 



- — , mean degree of humidity of the, 48. 



, mean tension of the, 48. 



Vapour pressure, variations of the, at To- 

 ronto, 58, 59. 



Vapour pressure, differences of, at Greenwich 

 and Toronto, 61. 



Vitrifaction, on a gas furnace for experi- 

 ments on, 82. 



Voltaic electrometer used at the Kew Obser- 

 vatoiy, 123. 



, comparison of, 135. 



Waves, atmospheric, 267, 270. 



, stations at which observations were 



made, 267, 270. 



, explanation of the sections of, 277. 



Waves, on, 311. 



, the nature of, and their velocity, 313. 



, system of water, 317. 



, of the first order, 319. 



, genesis of the, 320. 



, genesis by impulsion of force horizon- 

 tally apphed, 320. 



, genesis by a column of fluid, 320. 



, by protrusion of a solid, 321. 



, transmission of mechanical power by 



the, 321. 



, regenesis of, 322. 



, reflexion of the, 322. 



, measure of the power of wave genesis, 



322. 



, imperfect genesis of the, 323. 



, residuary positive, 323. 



,disintegTation of large wave masses, 323. 



, residuary negative, 323. 



, motion of transmission of, 324. 



, range of wave transmission, 324. 



, degradation of the, of the first order, 



325. 



, the velocity of transmission of the, 325. 



, height of the, an element in its velo- 

 city, 325. 



, historv of a solitaiy, from observation, 



325, 327." 



, experiments on the velocity of, 328. 



, determination of the velocity of the, 



328. 



, velocity of larger and smaller, 330. 



, of the first order, not formally de- 

 scribed, 330. 



, theoretical results subsequent to the 



publication of the author's investigations, 

 333. 



, rediscussion of the observations by the 



method of curves of, 337. 



, velocity due to, of the first order, 338. 



, the magnitude and form of the, 339. 



, absolute motions of each water parti- 

 cle during transmission, 340. 



, parallelism of translation, 341. 



, range of horizontal translation equal at 



aU depths, 341. 



, path of each water particle during 



translation lies wholly in a vertical plane, 

 342. 



, phaenomeua of, of the first order, 342. 



, geometrical representation of the, 343. 



, vertical motion of each particle of, 344. 



, horizontal motion of each particle of, 



344_ •'•1 it- -J^tiKJiiiHi Si.i 



