468 



INDEX to VOL. XXXIX. 



ABBOTT (Rev. T. K.) on some pro- 

 positions in the theory of the tides, 

 49. 



Acetic ether, on the successive action 

 of sodium and iodide of ethyle upon, 

 309, 394. 



Acids, on the action of the alkali- 

 metals on the ethers of the, 286. 



Affinity, on Berthollet's theory of, 

 410. 



Air, on the organic dust of the, 229. 



Aldis (T. S.) on Goodricke's theory 

 of algol, 363. 



Algol, on Goodricke's theory of, 

 363. 



Andrews (Dr. T.) on the continuity of 

 the gaseous and liquid states of 

 matter, 150. 



Arcturus, on the heating-power of, 

 376. 



Atomic theory, remarks on the, 122. 



volume of solid substances, on 



the, 339. 



Auroral appearances and their con- 

 nexion with the phenomena of ter- 

 restrial magnetism, on, 159. 



Avogadro's law, on the deduction of, 

 from the fundamental conception 

 of the mechanical theory of gases, 

 317. 



Ball (Prof. R. S.) on an elementary 

 proof of a theorem of Lagrange's, 

 107. 



Barometer, description of a new por- 

 table mercurial, 371. 



Battery, on a new secondary, 52. 



Berthollet's theory of affinity, obser- 

 vations on, 410. 



Bezold (Prof, von) on a new kind of 

 electrical dust-figures, 392. 



Books, new : — Edwards's Domestic 

 Fireplaces, 300 ; Mayer's Lecture- 

 notes on Physics, 302; Dexter's 

 Theory of Existence, ib. 



Branley (E.) on solar radiation, 315. 



Brooke (C.) on the inexpediency of 

 erroneous hypotheses, 464. 



Cable-testing, observations on, 169. 



Calantarients (J. A.) on a new port- 

 able mercurial barometer, 371. 



Challis (Rev. Prof.) on a mathema- 

 tical theorv of the tides, 18, 260, 

 435. 



Chemical statics, researches on, 410. 



Chemistry, on the province of mi- 

 neral, 348. 



Circuit, on the size of the wire which, 

 wound upon a galvanometer or 

 electromagnet, will produce the 

 maximum magnetic effect in a, 

 109. 



Clarke (Capt. A. R.) on the course of 

 geodesic lines on the earth's sur- 

 face, 352. 



Climate, on ocean currents in relation 

 to the physical theory of secular 

 changes of, 81, 180. 



Cockle (Sir J.) on criticoids, 201. 



Comets, observations on, 233; on a 

 new theory of, 401. 



Corona, observations of the, during 

 the total eclipse, Aug. 7, 1869, 17. 



