618 
INDEX. 
Davies (Thomas Stephens, Esq.). Geometrical investigations concerning the phenomena of 
terrestrial magnetism. Second series. — On the number of points at which a magnetic needle 
can take a position vertical to the earth’s surface, 75. 
Deficient rays in the solar spectrum , note on the supposed origin of, 453. 
E. 
Earthquake, account of the great one experienced in Chile on the 20th of February 1835, 21. 
Electricity, inquiries concerning the elementary laws of, second series, 417. 
F. 
Forbes (James D., Esq.). Note relative to the supposed origin of the deficient rays in the solar 
spectrum ; being an account of an experiment made at Edinburgh during the annular eclipse 
of the 15th of May 1836, 453. 
On the temperatures and geological relations of certain hot springs, 
particularly those of the Pyrenees; and on the verification of thermometers, 571. 
Functions of life in the more perfect animals, on the powers on which they depend, and on the 
manner in which they are associated in the production of their more complicated results, 343. 
H. 
Harris (W. Snow, Esq.). Inquiries concerning the elementary laws of electricity, 2nd series, 417. 
Heights of high water at Liverpool, on the solar inequality of the, 136. 
High water, semimenstrual inequality of the time of, 305. 
Horner (Leonard, Esq.). On an artificial substance resembling shell ; with an account of an 
examination of the same by Sir David Brewster, 49. 
Hot springs, particularly those of the Pyrenees, on the temperatures and geological relations of ; 
and on the verification of thermometers, 571. 
I. 
Imperial standard troy pound weight, a comparison of the late with a platina copy of the same, 
and with other standards of authority, 457. 
Insect life, duration of, in different media, 559. 
Insects, on the respiration of, 529. 
parts concerned in the respiration of, tracheae, 512; spiracles, 536; muscles, 537; nerves, 541. 
respiration of, how performed, 547 ; its quantity, 551. 
Integral calculus, researches in the, 177. 
J. 
Johnson (Edward J., Esq.). Report of magnetic experiments tried on board an iron steam-vessel, 
by order of the Right Honourable the Lords Commissioners of the Admiralty; accompanied 
by plans of the vessel, and tables showing the horizontal deflection of the magnetic needle at 
different positions on board, together with the dip and magnetic intensity observed at those 
positions, and compared with observations made on shore with the same instruments, 267. 
L. 
Light, on its action on plants, and on their action on the atmosphere, 149. 
researches towards establishing a theory of the dispersion of, 17. 
Lubbock (John William, Esq.). Discussion of the tide observations made at Liverpool, 57. 
— TheBakerian Lecture. — On the tides atthe port of London, 217. 
