118 



Waves, mechanism of the, 345. 



, as a vehicle of power, 347. 



, negative, of the first order, 348. 



, on the velocity of negative, of the first 



order, 348, 349. 



, on some conditions which affect the 



phaenomena of the, of the first order, 351. 



, of translation, effect of the form of 



channel on the, 352. 



, length of, an index of depth, 352 



, height of, in a channel of variable 



breadth and depth, 353. 



, form of transverse section of channel, 



354. 



, of the first order, in triangular chan- 

 nels, 355. 



, form of the channel affects the form of, 



as well as their velocity, 357. 



, of the first order, incidence and reflex- 

 ion of the, 357. 



, on the lateral diffusion and accumula- 

 tion of the, 358. 



, axis of maximum displacement of the, 

 358. 



, on the diffusion of the, round an axis 



of original transmission, 360. 



, velocity of the, calculated for various 



depths of the fluid in a channel of uniform 

 depth, extending from a depth O'l of an 

 inch to 100 feet, 361. 



, of the second order, 363. 



, oscillating, 363. 



, on the standing, of running water, 



364. 



Waves, moving, of the seccmd order — sea 

 waves, 366, 370. 



, on the length and velocity of, 367, 374. 



, of the third order — capillary, 375, 377. 



, on the velocity, distance and divergence 



of, 377. 



, comparison of experiments on the di- 

 vergence due to given velocities of genesis 

 of, 379. 



, for determining the velocity of currents 



or moving bodies by observations of diver- 

 gence, 380. 



, of the fourth order — corpuscular — 



sound wave of water, 382. 



West Indies, on the ornithology of the, 194. 



'VMiewell's (Rev. Dr.) anemometer, compara- 

 tive indications of Lind's gauge and, 263. 



, on the nomenclature of the stars, 32. 



anemometer, on the working of, at 



Plymouth, 241. 



, description of, 243. 



Wind, variations of the force of the, at To- 

 ronto, 58. 



, velocity of,by Foster's anemometer, 251. 



, amount of, for 1841 and 1842, with 



Osier's anemometer, 259, 260. 



, mean quantity of, for the four seasons, 



261, 



, amount of, for two months of 1844,262. 



Wood-engrawng, progress of, as applied to 

 ornithology, 201. 



Zoology, marine, of Corfu and the Ionian 

 islands, 390. 



INDEX II. 



MISCELLANEOUS COMMUNICATIONS TO THE 

 SECTIONS. 



Abyssinia, on the tape-worm as prevalent 



in, 85. 

 Acetates, solvent powers of solutions of, 32. 

 Acid, action of nitric, on naphtha, 33. 

 , supposed formation of valerianic, from 



Indigo, 33. 

 Acteon viridis, on the anatomy of, 65. 

 Actino-chemistry, contributions to, 12. 

 Aden, a year's meteorological observations 



made at, 22. 

 Adulteration in tobacco, on Mr. Phillips's 



method of discovering, 29. 



Africa, ethnography of, as determined by its 

 languages, 79. 



Agricultural labourers, hints on the improve- 

 ment of, 90. 



schools, near East Bourne, 87. 



Air, temperature of the, at various soundings 

 of Huggate Well, 22. 



Alder (Joshua) on Pterochilus, a new genus 

 of nudibranchiate Mollusca, and tw^o new 

 species of Doris, 66. 



Alexandria imperatricis, description of, 71. 



Alison (AV. P.) on the reports of the poor- 



