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a marked manner, and in this way determine the type. Thus, one can 
speak of a respiratory type of dust infection, of a gastric type, of a nervous 
type, etc. In some there is no localization; the body as a whole reacts. 
There may be a large number of symptoms and yet there is nothing definite 
that would enable one to speak of disease. It would appear that the body 
is really ‘healthy’ but is simply reacting to the abnormal environment, 
and the moment the environment is changed, the symptoms disappear. 
I have made a search through biographies relating to Indiana people 
for a good example of the influences of environment. I found only one 
biography that is sufficiently full to enable one to trace such influences, 
but as I am in search of further data, I shall not take this up at present. 
Instead I will take up the Life and Letters of Huxley. 
Thomas H. Huxley. The life of a man like Huxley or Darwin can 
be written from many different standpoints. If the biographer is a natural- 
ist, he can bring in the development of Natural History that has taken 
place throughout the tong life of such a man and the prominent part he 
took in it. If an evolutionist were to write the life, he would likely treat 
it from the standpoint of the development of the theory of evolution in 
which Huxley took such an aggressive part. The geologist, the paleontolo- 
gist, the ichthyologist, etc., each would find material enough to write a 
work that would be of interest to the specialist. The physician likewise 
finds material enough to write what may be called a medical biography, of 
special interest to physicians, and more especially because Huxley began 
life as a physician and throughout his long life was associated with medi- 
cal schools and with the best medical men of England. An individual in 
chronic illhealth can learn much by carefully studying Huxley’s Life and 
Letters, on account of the many references to chronic illhealth. Such 
a study may enable him to avoid many of the common symptoms of ill- 
health, or at least to reduce them to a minimum. 
Huxley reacted strongly to his environment, and to understand this 
one must study the lives of people living today who react in a similar 
manner. Analogy enables us to bring together cases of the same type. 
In studying the life of a man no longer living, one is in the position of the 
paleontologist who studies the fossil remains and thereby is enabled to 
more or less accurately reconstruct for us a picture of the thing that once 
was living, as already mentioned. According as a biography contains 
many references to illhealth conditions, one is enabled to more or less fully 
