INDEX to VOL. XIX. 



Acetone, detection of, in methylated 



spirit, 440. 

 Actinometrieal observations made at Mus- 



soorie, 8; at Dehra and Mussoorie in 



1869, 225. 



Airy (G. B.), remarks on the determination 

 of a ship's place at sea, 448. 



Aldehydes, deportment of certain, in pre- 

 sence of mercuric oxide and alkaline 

 metallic hydrate, 441. 



Allbutt (T. C.) on the effect of exercise 

 upon the bodily temperature, 289. 



Altitude, on the determination of a ship's 

 place from observations of, 259. 



Analysis of the principal disturbances 

 shown by the horizontal and vertical 

 force magnetometers from 1859 to 1864, 



o 524- 



Angstrom (A. J.), elected foreign member, 

 97 ; his researches, 120. 



Animal electricity, researches in, 22. 



Anniversary Meeting, Nov. 30, 1870, 113. 



Annual meeting for election of Fellows, 

 June 8, 1871, 494. 



Ansted (D. T.) on the temperature of the 

 interior of the earth, as indicated by 

 observations made during the construc- 

 tion of the Great Tunnel through the 

 Alps, 481. 



Approach caused by vibration, on, 35, 271. 

 Arches, on the formation of some of the 



Bubaxial, in man, 380. 

 Aromatic cyanates, on the, 108. 

 Atlantic Ocean, continuous depth of 2000 



fathoms in the, between the arctic and 



antarctic circles, 544. 

 ■ , observations on the currents of the, 



552. 



Atmospheric pressure, on a new instru- 

 ment for recording minute variations 

 of, 491. 



Auditors, election of, 94. 



Aurora, observation of the spectrum of, 

 19. 



Australia, on the fossil mammals of : 

 Part IV. Dentition and mandible of 



Thylaeoleo carnifex, 95 ; Part V. Genus 

 Nototherium, 494. 



Baffin's Bay, currents in, 552. 



Bakerian Lecture, on the increase of elec- 

 trical resistance in conductors with rise 

 of temperature, and its application to 

 the measure of ordinary and furnace 

 temperature ; also on a simple method 

 of measuring electrical resistances, 443. 



Baltic Sea, observations on the currents, 

 temperature, density, and salinity of, 

 536. 



Battery, a liquid thermometric, 341. 



Beams, on the theory of continuous, 56 ; 

 remarks on, 68. 



Belavenetz (I.), magnetic observations 

 made during a voyage to the North of 

 Europe and the coasts of the Arctic 

 Sea in the summer of 1870, 361. 



Bending moments of continuous beams, 

 investigation of, 61. 



Berthelot (M.) on the change of pressure 

 and volume produced by chemical com- 

 bination, 445. 



Besant (W. H.) admitted, 494. 



Black Sea, observations on the currents, 

 temperature, density, and salinity of, 

 536. 



Blood, experimental inquiry into the con- 

 stitution of, 465. 



corpuscles, on the physical principles 



concerned in the passage of, through 

 the walls of the vessels, 556. 



Bordeaux wine, action of, on the human 

 body, 73. 



British Museum, suggestions to lend du- 

 plicate natural-history specimens, 123. 



Broughton (J.), chemical and physiologi- 

 cal experiments on living Cinchona?, 20. 



Calamites of the coal-measures, on the 

 organization of, 268. 



Callender (G. W.) admitted, 494. 



, on the formation of some of the sub- 

 axial arches in man, 380, 



