INDEX 
TO THE 
PHILOSOPHICAL TRANSACTIONS 
FOR THE YEAR 1880. 
A. 
Abel (F. A.) and Noble (Captain) (see Noble). 
Abney (W. de W.). The Bakerian Lecture. On the Photographic Method of Mapping the least 
Refrangible End of the Solar Spectrum, 653. 
Aluminium , revision of the atomic weight of, 1003. 
Anemometer, determination of the constants of a cup, 1055 (see Robinson). 
Ayrton (W. E.) and Perry (J.). The Contact Theory of Yoltaic Action.—No. III., 15. 
B. 
Bakerian Lecture (see Abney). 
Battery, voltaic, potential of a , deduced from the differences of potential of its constituent parts, 15. 
Brain, comparative structure of, in different animals, 35 (see Lewis). 
C. 
Cayley (A.). A Memoir on the Single and Double Theta-Functions, 897.—Introduction, 898; the single 
theta-functions, 911; the double theta-functions, 934. 
Clark (L.), potential of his standard cell, 25. 
Clarke (G. S.) and M‘Leod (H.) (see M‘Leod). 
Goal-Measures, fossil plants of, 493 (see Williamson). 
MDCCCLXXX. 7 A 
