...know what meaning to attach to it. Mr. Wallace says, "This progression by minute steps in different directions, but always checked and balanced by the...of form, instinct and habits which they exhibit." Does he mean that by the tendency to vary we may explain all the differences that obtain between different...

...directions, but olwaya ehecked and balanced by the necessary cou» ditious, subject to which aloue existence can be preserved, may, it is believed, be...followed out so as to agree with all the phenomena preaented by organized bcings, thcir extinction and •uoeaasion in past agea, and all the extraordinary...

...nature will also explain why domestic varieties have a tendency to revert to the original type. The progression, by minute steps, in various directions,...extraordinary modifications of form, instinct, and habit which they exhibit." The possibility of departing indefinitely from the original type is here...

...nature will also explain why domestic varieties have a tendency to revert to the original type. The progression, by minute steps, in various directions,...extraordinary modifications of form, instinct, and habit which they exhibit." The possibility of departing indefinitely from the original type is here...

...tendency to revert to the original type. The progression, by minute steps, in various directions, hut always checked and balanced by the necessary conditions,...extraordinary modifications of form, instinct, and habit which they exhibit." The possibility of departing indefinitely from the original type is here...

...why domestic varieties have a tendency, when they become wild, to revert to the original type. This progression, by minute steps, in various directions,...modifications of form, instinct and habits which they exhibit. III. MIMICRY, AND OTHER PROTECTIVE RESEMBLANCES AMONG ANIMALS. THERE is no more convincing proof of...

...why domestic varieties have a tendency, when they become wild, to revert to the original type. This progression^ by minute steps, in various directions,...modifications of form, instinct and habits which they exhibit. III. MIMICRY, AND OTHEE PROTECTIVE RESEMBLANCES AMONG ANIMALS, THERE is no more convincing proof of...

...steps, in various directions, but always checked by certain necessary conditions, may serve to explain " all the phenomena presented by organized beings, their...of form, instinct, and habits which they exhibit." In his essay on "Mimicry and other Protective Resemblances amongst Animals," Mr. Wallace makes an important...

...steps, in various directions, but always checked by certain necessary conditions, may serve to explain " all the phenomena presented by organized beings, their...of form, instinct, and habits which they exhibit." In his essay on "Mimicry and other Protective Resemblances amongst Animals," Mr. Wallace makes an important...

...tendency, when they become wild, to revert to the original type. This progression," continues Mr. Wallace, "by minute steps in various directions, but always...so as to agree with all the phenomena presented by organised beings, their extinction and succession in past ages, and all the extraordinary modifications...