CONTENTS. 



Translator. Title. Page. 



I. A.E.SHIPLEY . . THE DURATION OP LIFE, 1881 . . i 



II. ON HEBEDITY, 1883 67 



III. LIFE AND DEATH, 1883 107 



IV. SELMAR SCHONLAND THE CONTINUITY OF THE GERM-PLASM AS THE 



FOUNDATION OF A THEORY OF HEREDITY, 1885 161 



y. THE SIGNIFICANCE OF SEXUAL REPRODUCTION IN 



THE THEORY OF NATURAL SELECTION, 1886 . 251 



VI. ON THE NUMBER OF POLAR BODIES AND THEIR 



SIGNIFICANCE IN HEREDITY, 1887 . - -333 



VII. J ON THE SUPPOSED BOTANICAL PROOFS OF THE 



TRANSMISSION OF ACQUIRED CHARACTERS," 1888. 385 



VIII. v/ THE SUPPOSED TRANSMISSION OF MUTILATIONS, 



1888 4 J 9 



