April, ’23] 
KELLOGG: EXTRA-ENTOMOLOGICAL STUDIES 
189 
was a man who paid no attention to these artificial distinctions that we 
set up among the different fields of science. He was celebrated almost 
equally as physicist, as chemist, as biologist,, as a man of medicine, and a 
great contributor to animal and plant industry. He stepped through 
and across these artificial barriers. Not that he knew all of chemistry, 
nor all of physics, or all of biology, but he struggled to learn as much as 
he could of nature and of science, without regard to where this struggle 
led him, whether toward chemistry or biology or what not, in order to 
solve the problems in science that were proposed to him. 
These problems were given to him, as your problems are given to you, 
by the conditions in the country in which he lived. The French had a 
great wine industry, and it was threatened with disaster; and so Pasteur 
went to work to try to save the wine industry, and in connection with 
that he made his world famous and lasting discovery of the causes of fer¬ 
mentation —the microbic causes. 
When he finished that w T ork, other countrymen of his called upon him 
to save another great French industry-—the silk growing industry. 
Although he remonstrated that he had not touched a silk worm, and 
hardly knew one by sight, yet he did not hesitate, with his method and 
mind and good training, to attempt to discover the secrets of the diseases 
of the silk worm. And it was he who discovered the actual causes of 
pebrine, and devised effective remedies for this disease. He saved the 
French silk industry and that of the world. 
Then he was called upon by the cattle and sheep growers, because their 
herds and flocks were being lost by charbon, or anthrax, and he studied 
the secrets of this and found that the bacillus of anthrax was the cause 
of the disease, and he also discovered that by attenuating a virus until it 
becomes a vaccine, and then inoculating the animals with this vaccine, 
he could immunize the animals from the effects of the disease. 
Finally, Pasteur went on to the study of a human disease—that 
terrible disease of rabies—and he not only discovered its secrets and 
learned how to prevent its ravages but also founded the microbic doctrine 
of infectious human disease. 
Well, there is an example for the entomologist. You and I can never 
be Pasteurs, but we can adopt his method and his broad point of view. 
We can encourage the kind of training that he felt he needed; we can 
urge our students to work broadly and not hesitate to go into new fields. 
He called himself first a physicist or chemist. We are entomologists, 
but is that going to restrain us from knowing zoology or botany or even 
some chemistry? I hope not. 
