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understand the nature of the illhealth—which may not have been thor- 
oughly understood during the life of the individual. 
Huxley was a voluminous writer along many lines, chiefly, as most 
of you know, on biological subjects. Beginning with papers on certain 
groups of animals, he gradually branched out to include man, not only 
from a biological and anthropological standpoint, but also from that of 
biography; to understand his many-sided mind, one has to read his various 
volumes. 
To the student of dust influences there is likewise much of interest, 
not so much in his technical writings as in his biography. Although 
Huxley realized the general influence of environment, he seemed not to 
have realized the influence of dust conditions, of coniotics. One can readily 
see how such a gifted man might have avoided much illhealth, and perhaps 
have lived many years longer, by having such a knowledge. 
Huxley was eminently sane in his views regarding man’s position in 
the universe; unfortunately for medical science, he did not follow medicine 
closely. He distributed his mind among many fields of inquiry, some of 
which have only remote relationship to medicine. 
At the time when he was actively engaged in the practice of medicine, 
there was little science compared to what is found today; it was before 
the days of cellular pathology and bacteriology. Conditions were such as 
to create disgust in a scientific mind like that of Huxley, and so it is 
very natural that he should have drifted away from the practice of medi- 
cine and become a teacher of some of the sciences on which medicine rests, 
notably anatomy and physiology. 
Although cellular pathology arose during Huxley’s lifetime, yet he 
never took it up. It is an exemplification of the saying, ‘You can’t teach 
an old dog new tricks,’ and when a man’s eyesight begins to fail on account 
of age, the days for close microscopic study are past. Unless one studies 
pathology and bacteriology in the laboratory, makes his own cultures and 
examines them, one’s knowledge is not apt to be thorough and the diffi- 
culties of working out certain problems are not realized, and, on the other 
hand, the brilliant results obtained by some men cannot be fully appre- 
ciated. It is only the student who works ‘in a practical manner’ who gets 
the best insight, assuming of course that he has the mental capacity also 
to reason on the ‘imaginary or theoretical side,’ to form theories and 
then attempt to verify them. 
Huxley did not understand the influence of air conditions. At one 
