We must face sex problems with biological and historical knowledge.
But the biological objection to any such proposition is not far to seek.
Much has been said in justification of this view of war from the biological point of view.
Hybrids are regarded as inferior creatures, as biological outlaws.
This, we know, is the biological law, and Khalid must suffer under it.
The work takes on various chemical, mechanical, and biological aspects.
It grows out of the biological discussion of instinct, heredity, etc.
There is not one biology of the medical school, another of the biological laboratory.
What is the secret of the vitality of these Galenic biological conceptions?
But, above all, the Aristotelian biological works were fertilizers of the mind.