Anmversary Address by Lord Rayleigh. 71 
this curious inequality may lie in the circumstance that reflex flexion of the 
limb of itself induces as a sequence to itself extension, so that no local 
stimulus is, in so far, required for extension. The same argument may also 
apply to the analogous inequality of jaw opening and jaw closing, both 
as locally elicitable reflexes and in their primary representation in the 
“motor” cortex.* At root of the inequality with which movements of 
opposite direction, forming complemental pairs, are represented, both in the 
fields of local reflex action and in the “motor” cortec cerebri, may lie 
“successive induction.” 
Address of the President, Lord Rayleigh, O.M., D.C.L., at the 
Anniversary Meeting on November 30, 1907. 
Since the last Anniversary the Society has sustained the loss of twenty- 
five Fellows and three Foreign Members. 
The deceased Fellows are :— 
Thomas Andrews, Rev. John Kerr, 
Sir Benjamin Baker, Sir Leopold McClintock, 
Sir Dietrich Brandis, Dr. Maxwell Tylden Masters, 
Sir William Henry Broadbent, Prof. Alfred Newton, 
Dr. Alexander Buchan, Cornelius O’Sullivan, 
Lord Davey, Sir Wilham Henry Perkin, 
Dr. August Dupré, | Dr. Wiliam Henry Ransom, 
Sir Joseph Fayrer, Sir Edward James Reed, 
Sir Michael Foster, Dr. Edward John Routh, 
Sir William Tennant Gairdner, Henry Chamberlaine Russell, 
Lord Goschen, Prof. Charles Stewart, 
Sir James Hector, Robert Warington. 
_ Prof. Alexander Stewart Herschel, 
The Foreign Members are :— 
Marcellin Berthelot, Dmitri Ivanovitch Mendeleeft, Henri Moissan. 
* Jbid., and ‘Journ. of Physiology,’ vol. 34, p. 315. 
VOL. LXXX.—B. | G 
