INDEX. 
r.24 
G. 
Gravity, account of recent pendulum operations for determining the relative force of, at the Kew and 
Greenwich observatories, 537 (see Walker). 
Greenwich and Kew ohservatories, account of recent pendulum operations for determining the relative 
force of gravity at the, 537 (see Walker), 
I, 
Interchange of the variables in certain linear differential opei’ators, on the, 19 (see Elliott). 
K. 
Kew and Greenivich ohservatories, account of recent pendulum operations for determining the relative 
force of gravity at the, 537 (see Walker). 
L. 
Linear differential operators, on the interchange of the variables in ceitain, 19 (see Elliott). 
Liquid in motion, on the alleged slipping at the boundary of a, 559 (see Whetham). 
]\[. 
MacMahon (P. a.). Memoir on Symmetilc Functions of the Roots of Systems of Equations, 481. 
Magnetic survey of the Britith Isles for the tpoch January 1, 1886.— Bakerian Lecture, 53 (see RtiCKER 
and Thorpe). 
Magnetisation of cohalt, on the effects of pressure on the, 329 (see Chree). 
Michell (J. H.). On the Theory of Free Stream Lines, 389. 
P. 
Pendulum operations for determining the rtlative force of gravity at the Kew and Greenwich observa¬ 
tories, account of recent, 537 (see Walker). 
R. 
Rucker (A. W.) and Thorpe (T. E.). A Magnetic Survey of the Riitish Isles for the Epoch January 1 
18f6.— Bakerian Lecture, 53. 
