 The prolonged helplessness of the offspring must keep the parents together for longer and longer periods in successive epochs ; and when at last the association is so long kept up that the older children are growing mature while the younger ones still...  Nature - Seite 267herausgegeben von - 1875Vollansicht - Über dieses Buch
 | American Association for the Advancement of Science - 1877 - 444 Seiten
...helplessness of the offspring must keep the parents together for longer and longer periods in successive epochs ; and when at last the association is so long...still need protection, the family relations begin to«become permanent. The parents have lived so long in company that to seek new companionships involves... | |
 | james r - 1873 - 520 Seiten
...helplessness of the offspring must keep the parents together for longer and longer periods in successive epochs ; and when at last the association is so long...seek new companionships involves some disturbance of engrained habits ; and meanwhile the older sons are more likely to continue their original association... | |
 | Jared Sparks, Edward Everett, James Russell Lowell, Henry Cabot Lodge - 1873 - 512 Seiten
...helplessness of the offspring must keep the parents together for longer and longer periods in successive epochs ; and when at last the association is so long...The parents have lived so long in company, that to sect new companionships involves some disturbance of engrained habits ; and meanwhile the older sons... | |
 | John Fiske - 1874 - 562 Seiten
...helplessness of the offspring must keep the parents together for longer and longer periods in successive epochs ; and when at last the association is so long...seek new companionships involves some disturbance of engrained habits ; and meanwhile the older sons are more likely to continue their original association... | |
 | John Fiske - 1874 - 540 Seiten
...helplessness of the offspring must keep the parents together for longer and longer periods in successive epochs ; and when at last the association is so long...seek new companionships involves some disturbance of engrained habits ; and meanwhile the older sons are more likely to continue their original association... | |
 | John Fiske - 1874 - 1188 Seiten
...helplessness of the offspring must keep the parents together for longer and longer periods in successive epochs ; and when at last the association is so long...seek new companionships involves some disturbance of engrained habits ; and meanwhile the older sons are more likely to continue their original association... | |
 | John Fiske - 1875 - 538 Seiten
...helplessness of the offspring must keep the parents together for longer and longer periods in successive epochs ; and when at last the association is so long...seek new companionships involves some disturbance of engrained habits ; and meanwhile the older sons are more likely to continue their original association... | |
 | American Association for the Advancement of Science - 1877 - 448 Seiten
...helplessness of the offspring must keep the parents together for longer and longer periods in successive epochs ; and when at last the association is so long...to become permanent. The parents have lived so long iu company that to seek new companionships involves some disturbance of ingrained habits, and meanwhile... | |
 | 1882 - 646 Seiten
...helplessness of the offspring must keep the parents together for longer and longer periods in successive epochs ; and when at last the association is so long...older children are growing mature while the younger still need protection, the family relations begin to become permanent. The parents have lived so long... | |
 | Joseph Krauskopf - 1887 - 580 Seiten
...together for longer and longer periods in successive epochs; and when at last the association is M. long kept up that the older children are growing mature while the younger ones still need protection, llie family relations liegin to become permanent. The parents have lived so long m com pany, that to... | |
| |
