by Ernest Ingersoll
by Vernon L. (Vernon Lyman) Kellogg
by Francis M. (Francis Maitland) Balfour
by B. Lindsay
by Francis M. (Francis Maitland) Balfour
by Otto von Kotzebue
by August Weismann
by Wilhelm Bölsche
by Thomas Henry Huxley
by G. R. (George Robert) Waterhouse
by Francis M. (Francis Maitland) Balfour
by Francis M. (Francis Maitland) Balfour
by August Weismann
by Otto von Kotzebue
by Jean Baptiste Pierre Antoine de Monet de Lamarck
by Sir A. E. (Arthur Everett) Shipley
by Mason Augustus Walton
by Thomas Garnett
by August Weismann