INDEX 
TO THE 
PHILOSOPHICAL TRANSACTIONS 
FOE THE YEAE 1873. 
A. 
Airy (Sir G. B.). Magnetical Observations in the Britannia and Conway Tubular Iron Bridges, 331. 
Amblygonite, 574. 
Ammonia, condensation of, by ammonia nitrate, 359. 
Animal remains found in Brixham Cave, 499. 
B. 
Bakerian Lecture, 1872. — On the Structure and Development of the Skull in the Salmon, 95 (see 
Parker). 
Bakerian Lecture, 1873. — On the Radiation of Heat from the Moon, &c., 587 (see Rosse, Earl or). 
Barometrical variations, diurnal, in connexion with those of the wind, 1. 
Belgium, magnetic survey of, 341. 
Bristow (H. W.). Notes of his Survey of the Brixham Cave, 496. 
Brixham Cave, report of the exploration of, 471 (see Prestwich). 
Busk (G.). Report of the Animal Remains of the Brixham Cave, 499. 
C. 
Cave, exploration of Brixham, 471. 
Cayley (A.). On Curvature and Orthogonal Surfaces, 229. — Conormal correspondence of vicinal 
surfaces, 237 ; condition that two surfaces may belong to an orthogonal system, 245 ; that a family 
of surfaces may belong to an orthogonal system, 248. 
Challenger expedition, remarkable crustacean obtained in the, 629. 
Chambers (E.). The Diurnal Variations of the Wind and Barometric Pressure at Bombay, 1. 
Clarke (A. R.). Results of the Comparisons of the Standards of Length of England, Austria, Spain, 
United States, Cape of Good Hope, and of a second Russian Standard, made at the Ordnance 
Survey Office, Southampton, 445. 
Contraction of slags <Sfc. in cooling, 191. 
MDCCCLXXIII. 4 U 
