THE KINETIC SYSTEM . . . . . . . . . . . . . . . . . . . . .173

ALKALESCENCE, ACIDITY, ANESTHESIA--A THEORY OF ANESTHESIA. .227

INDEX. . . . . . . . . . . . . . . . . . . . . . . . . . . .237
THE ORIGIN AND NATURE OF THE EMOTIONS

PHYLOGENETIC ASSOCIATION IN RELATION TO CERTAIN MEDICAL PROBLEMS[*]


[*] Address delivered at the Massachusetts General Hospital on
the sixty-fourth anniversary of Ether Day, Oct. 15, 1910.


The discovery of the anesthetic properties of ether and its practical
application to surgery must always stand as one of the great
achievements of medicine. It is eminently fitting that the anniversary
of that notable day, when the possibilities of ether were first
made known to the world, should be celebrated within these walls,
and whatever the topic of your Ether Day orator, he must fittingly
pause first to pay tribute to that great event and to the master
surgeons of the Massachusetts General Hospital. On this occasion,
on behalf of the dumb animals as well as on behalf of suffering humanity,
I express a deep sense of gratitude for the blessings of anesthesia.

Two years ago, an historic appreciation of the discovery of ether
was presented here by Professor Welch, and last year an address
on medical research was given by President Eliot. I, therefore,
will not attempt a general address, but will invite your
attention to an experimental and clinical study. In presenting