[ 553 ] 



INDEX to VOL. XXXVI, 



Aberration problems, 549. 



Actino meter, on a modified form 



of Bunsen and Roscoe's pendu- 

 lum, 459. 

 Air, on the refractive index of liquid, 



328. 

 Alloys, on the electrical resistance 



of, at temperatures approaching 



the absolute zero, 271. 

 Aluminium, on the oxidation of pure, 



when in contact with mercury, 



151 ; on the electrical resistance 



of, at temperatures approaching 



the absolute zero, 288. 

 Aurora borealis, on the, 343. 

 Averages, on the correlation of, 350, 



372. 

 Axioms, on the nature of, 1. 

 Barrow (G.) on an intrusion of Mus- 



covite-biotite-gneiss in the S.E. 



Highlands, 145. 

 Bauernberger (H.) on the strength 



of the electrical waves when the 



spark passes in oil, 464. 

 Beach (F. E.) on the use of cupric 



nitrate in the voltameter, and the 



electro-chemical equivalent of 



copper, 384. 

 Benischke (Dr. G.J, investigations on 



dielectrics, 383. 

 Blake (Prof. J. F.) on the felsites 



and conglomerates between Be- 



thesda and Llanllyfni, 148. 

 Boltzmann (Prof. L.) on the methods 



of theoretical physics, 37. 

 Books, new : — A Memorial of Joseph 



Henry, 142 ; Macfarlane's Funda- 

 mental Theorems of Analysis 



Generalized for Space, and the 



Imaginary of Algebra, 143 ; Kolls 



Theorie der Beobachtungsfehler 



und die Methode der Kleinsten 



Quadrate, 144; E wing's Magnetic 



Induction in Iron and other Metals, 



308 ; Payne's Practical Solid Geo- 

 metry, Prince's Graphic Arithmetic 



and Statics, 463 ; Casey's Treatise 



on the Analytical Geometry of 



the Point, Line, Circle, and Conic 



Phil Mag. S. 5. Yol. 36. No. 223. Dec. 1893. 



Sections, 545 ; Traube's Physikal- 

 isch-chemische Methoden, 546 ; 

 Lassar-Cohn's Arbeits method en 

 fur Organisch-chemische Labora- 

 torien, 547. 



Boscovich, on the elasticity of a 

 crystal according to, 414. 



Boys (C. V.) on the drawing of 

 curves by their curvature, 7 '5. 



Brush-discharges in gases, on, 45. 



Bryant (Mrs. S.) on an example in 

 correlation of averages for four 

 variables, 372. 



Buckman (S. S.) on the Bajociau of 

 the Sherborne district, 229. 



Cadmium, on the electrical resist- 

 ance of, at temperatures approach- 

 ing the absolute zero, 294. 



Callaway (Dr. C.) on the origin of 

 the crystalline schists of the 

 Malvern Hills, 146. 



Carbon at high temperatures and 

 under great pressures, experiments 

 on, 304 ; on the atomic weight of, 

 552. 



Carbonic acid and nitrogen, on some 

 thermal properties of a mixture of, 

 438. 



Colour-blindness, on, 188. 



Compounds, on the dissociation of, 

 in water, by the lowering of the 

 freezing-point, 465. 



Contrast-colour, on the phenomena 

 of simultaneous, 153. 



Copper, on the electrical resistance 

 of, at temperatures approaching 

 the absolute zero, 286 ; on the 

 electrochemical equivalent of, and 

 use of the nitrate in the volta- 

 meter, 384. 



Critical point, on the, 230, 231 ; 

 on the condition of matter near 

 the, 552. 



Crystal, on the elasticity of a, accord- 

 ing to Boscovich, 414. 



Crystals, on the theory of pyro-elec- 

 tricity and piezo-electricity of, 453. 



Curves, on the drawing of, by their 

 curvature, 75. 



2 P 



