...the male organism to retain it ? Possibly ; but in that case its dysteleological value is gone. II. Professor Haeckel looks upon the causes which have...of external conditions to modify the organism and effect its adaptation to themselves. The internal impulse is conservative, and tends to the preservation...

...the male organism to retain it ? Possibly ; but in that case its dysteleological value is gone. II. Professor Haeckel looks upon the causes which have...heredity; and a centrifugal, which results from the tendencj- of external conditions to modify the organism and effect its adaptation to themselves. The...

...upon the causes which have led to the present diversity of living nature as twofold. Living matter, be tells us, is urged by two impulses — a centripetal,...tends to preserve and transmit the specific form, and wh1ch he identifies with HEREDITY, and a centrifugal, which results from the tendency of external conditions...

...the male organism to retain it ? Possibly ; but in that case its dysteleological value is gone.1 II. Professor Haeckel looks upon the causes which have...of external conditions to modify the organism and effect its adaptation to themselves. The internal impulse is conservative, and tends to the preservation...

...that no order of fishes is known to be extinct. Huxley accepts Haeckel's view that " living matter is urged by two impulses, a centripetal, which tends...of external conditions to modify the organism and effect its adaptation to themselves. The internal impulse is conservative and tends to the preservation...

...that no order of fishes is known to be extinct. Huxley accepts Haeckel's view that " living matter is urged by two impulses, a centripetal, which tends...of external conditions to modify the organism and effect its adaptation to themselves. The internal impulse is conservative and tends to the preservation...