INDEX TO VOL. XVI. 

A 
Adaptation of the Eye to distinct Vision at different Distances, 1. 
Aviz (Jou). On the advantages to be derived from the use of metallic reflectors for sextants and 
other reflecting instruments ; and on the methods of directly determining the errors in mirrors 
and sun-shades used in reflecting instruments, 61. 
Axtson (Witxi4m P.) M.D. Observations on the principles of vital affinity, as illustrated by recent 
discoveries in organic chemistry, 305. 
Anperson (THomas), M.D. On the constitution and properties of picoline, a new organic base from 
coal-tar, 123. On certain products of decomposition of the fixed oils in contact with sulphur, 363. 
On the colouring matter of the Morinda citrifolia, 435. On the products of the destructive dis- 
tillation of animal substances, 463. 
Animal Substances, on the products of the destructive distillation of, 483. 
Atlantic and German Oceans, force of the waves of the, 23. 
B 
Balance Magnetometer, and its temperature corrections, 67. 
Barometer, mean height of the, at the level of the sea, 237. 
Binary Star «a Centauri, notice of the orbit of the, 445. 
Bleaching, on the action of dry gases on organic colouring matters, and its relation to the theory of, 475. 
Blood and Milk, observations on, 53. : 
Bones, on the extraction of phosphoric acid from, 47. 
Brewster (Sir Davip). On the modification of the doubly refracting and physical structure of 
topaz by elastic forces emanating from minute cavities, 7. On the existence of crystals with 
different primitive forms and physical properties in the cavities of minerals, 11. On the de- 
composition and dispersion of light within solid and fluid bodies, 111. 
Broun (Joun A.) On the relation of the variations of the earth’s magnetism to the solar and lunar 
periods, 99, 137. On the balance magnetometer, and its temperature corrections 67. 
C 
Calcium, on the solubility of fluoride of, in water, 145. 
CaLpEcot (JoHN). Observations on the temperature of the ground at Trevandrum, in India, from 
May 1842 to December 1845, 379. 
Carnot’s theory of the motive power of heat, 541. 
Cuatmers (Tuomas) D.D. & LL.D. Biographical notice of the late, 497. 
Cockburnlaw, and the adjoining district, im Berwickshire, geology of, 33. 
ConnELL (ArTHUR). On the reaction of natural waters with soluble lead salts, 357. 
Crystals in the Cavities of Minerals, on the existence of, 11. 
Curves, theory of rolling, 519. 
D 
Davy (Joun) M.D. Miscellaneous observations on blood and milk, 53. 
Decomposition of the fixed Oils in contact with Sulphur, on certain products of, 363. 
VOL. XVI. PART V. SF 
