T£NT OF 



3L. I. 



ABSORPTION, on Balfour Stew- 

 art's theory of the connexion be- 

 tween radiation and, 98. 



Air, on the specific ionic velocities 

 in, 82; on the visibility of hy- 

 drogen in, 100 ; on the demon- 

 stration at atmospheric pressure 

 of argon from small quantities of, 

 103 ; on the resistance of the, at 

 speeds below 1000 ft. a second, 

 530; on, subjected to .r-ravs, 535. 



Alloys of iron and aluminium, on 

 the magnetic properties of, 296. 



Aluminium and iron, on the mag- 

 netic properties of alloys of, 296. 



Anomalous dispersion of cyanin, on 

 the, 36; of carbon, on the, 405; 

 on the production of a bright-line 

 spectrum by,- 551 ; on a new 

 method of exhibiting, 624. 



Aphometer, description of the, 

 267. 



Argon, on the demonstration at 

 atmospheric pressure of, from 

 small quantities of air, 103. 



Astigmatic lenses, on, 239. 



Atmosphere, spectroscopic notes con- 

 cerning the gases of the, 100 ; on 

 the concentration of helium from 

 the, 105. 



Atomic weights, on the tendency of 

 the, to approximate to whole 

 numbers, 311. 



Balfour Stewart's theory of the con- 

 nexion between radiation and ab- 

 sorption, on, 98. 



Barlda (C. J.) on the velocity of 

 electric waves along wires, 652. 



Barlow (W.) on the thirty-two 

 classes of crystal symmetry, 1. 



Barton (Br. E. H.) on the refraction 

 of sound by wind, 159. 



Barus (Dr. O.) on the change of the 

 colours of cloudy condensation, 

 572. 



Beattie (Prof. J. O.) on leakage of 

 electricity from charged bodies, 

 442. 



Beattie (R.) on the hysteresis of 

 nickel and cobalt in a rotating 

 magnetic field, 642. 



Bonney (Prof, T. G.) on the drifts 

 of the Baltic coast of Germanv, 

 598. 



Books, new : — Weber's Die partiellen 

 Ditf'erential-Gleichungen der ma 

 thematischen Physik, 166 ; Ball's 

 Treatise on the Theory of Screws, 

 260 ; Annuaire du Bureau des 

 Longitudes pour l'an 1901, 517 ; 

 The Electro-Chemist and Metal- 

 lurgist, 517 ; Rudorf's The Peri- 

 odic Classification and the Problem 

 of Chemical Evolution, 517 ; Mel- 

 dola's Inorganic Chemistry, 518; 

 Hawkins' Theory of Commutation, 

 519 ; von Bezold's Theoretische 

 Betrachtungen iiber die Ergeb- 

 nisse der Wissenschaftlichen Luft- 

 fahrten des Deutschen Vereins zur 

 Forderung der Luftschiffahrt in 

 Berlin, 519; Brillouin's Memoires 

 Originaux sur la Circulation Gene- 

 rale de 1' Atmosphere, 519 ; Wein- 

 stein's Die Erdstrome im Deuts- 

 chen Reichstelegraphengebiet,520. 



Bottomley (Dr. J. T.) on the ex- 

 pansibility of a hard Jena glass, 

 125. 



Brace (Prof. D. B.) on the resolution 

 of light into its circular com- 

 ponents in the Faraday effect, 

 464 ; on the determination of the 

 order of crystal-plates, 546. 



