Homologue. The Same Organ In

Analogue. A Part Or Organ In One Animal Which Has The Same Function As Another Part Or Organ In A Different Animal.

The Laws Of Coexistence;-the Adaptation Of Structure To Function; And To A Certain Extent The Elucidation Of Natural Affinities May Be Legitimately Founded Upon The Examination Of Fully Developed Species;-but To Obtain An Insight Into The Laws Of Development,-the Signification Or Bedeutung, Of The Parts Of An Animal Body Demands A Patient Examination Of The Successive Stages Of Their Development, In Every Group Of Animals.

No Naturalist Has Devoted More Painstaking Attention To The Structure Of The Barnacles Than Mr. Darwin.

Manifold Subsequent Experience Has Led To A Truer Appreciation And A More Moderate Estimate Of The Importance Of The Dependence Of One Living Being Upon Another.

Cuvier Had Preceded Lamarck In Specifying The Kinds And Degrees Of Variation, Which His Own Observations And Critical Judgment Of The Reports Of Others Led Him To Admit.