I wish, indeed, it were possible to believe that substituting biology for Greek prose composition or history with models and photographs and diagrams for Latin versification, would make any considerable difference in this matter.

The significance of persistent types, and of the small amount of change which has taken place even in those forms which can be shown to have been modified, becomes greater and greater in my eyes, the longer I occupy myself with the biology of the past.

Those whose business it is to acquaint themselves specially with the works of palaeontologists, in fact, will be fully aware that very few, if any, would rest satisfied with such a statement of the conclusions of their branch of biology as that which has just been given.

The effects were reported to the Society of Biology in Paris, one memorable evening, June 1, 1889, in two notes on the results of the hypodermic injection in man of the testis juice of monkeys and dogs, and certain generalizations deduced therefrom.

Laughter had deserted it, as clearly as romance or pathos, and more and more it was becoming the vehicle of cynical biology on the one hand, and Unitarian theology on the other.

In geometry we learned to angles, in biology to cats.