 | Elliott Coues - 1874 - 816 Seiten
...retreat before the advance of man, may have been one of the causes which have induced the change. I am satisfied, however, that it has not been the leading...are two of the ways in which it manifests itself." V1BEO SOLITARIUS var. PLUMBEUS, (Coues) Allen. Plumbeous Vlreo. " Vtreo most like nolilarius," COUKS,... | |
 | Elliott Coues - 1874 - 826 Seiten
...before the advance of man, may have been one of the causes which have induced the change, I am satisOed, however, that it has not been the leading one, but...are two of the ways in which it manifests itself." V1EEO SOLITARIUS var. PLUMBEUS, (Coues) Allen. Plumbeous Ylreo. " Vireo most like solitariiw," COIIES,... | |
 | Elliott Coues, Geological and Geographical Survey of the Territories (U.S.) - 1874 - 818 Seiten
...have been one of the causes which have induced the change. I atn satisfied, however, that it has nof been the leading one, but that self-preservation has...are two of the ways in which it manifests itself." 100 VIREO SOLITARIUS VAR. PLUMBEUS, PLUMBEOUS VIEEO. V1REO SOLITARIUS var. PLUMBEUS, (Cones) AUen.... | |
 | James Samuelson, Henry Lawson, William Sweetland Dallas - 1874 - 510 Seiten
...retreat before the advance of man, may have been one of the causes which have induced the change. I am satisfied, however, that it has not been the leading...individual and family good. The adaptation of the colours of the female bird to the tints of surrounding objects, during the trying period of incubation,... | |
 | Elliott Coues - 1874 - 816 Seiten
...retreat before the advance of man, may have been one of the causes which have induced the change. I am satisfied, however, that it has not been the leading...for individual and family good. The adaptation of the.colors of the female bird to the tints of surrounding objects, during the trying period of incubation,... | |
 | 1874 - 788 Seiten
...the favourite materials, or a desire for selfpreservation. I am satisfied, however, that the former has not been the leading one, but that self-preservation...operated in this case for individual and family good. PARIS Academy of Sciences, Jan. 19. — M. Bertrand fin the chair. — The following papers were read... | |
 | Sir Norman Lockyer - 1874 - 542 Seiten
...the favourite materials, or a desire for sellpreservation. I am satisfied, however, that the former has not been the leading one, but that self-preservation...operated in this case for individual and family good. PARIS Academy of Sciences, Jan. 19. — M. Bertrand [in the chair. — The following papers were read... | |
 | Sir Norman Lockyer - 1874 - 546 Seiten
...the favourite materials, or a desire for selfpreservation. I am satisfied, however, that the former has not been the leading one, but that self-preservation...operated in this case for individual and family good. PARIS Academy of Sciences, Jan. 19. — M. Bertrand [in the chair. — The following papers were read... | |
 | 1876 - 494 Seiten
...retreat before the advance of man, may have been one of the causes which have induced the change. I am satisfied, however, that it has not been the leading one, but that self-preservation has operated iu this case for individual and family good. The adaptation of the colours of the female bird to the... | |
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... consideration, it cannot be denied that the utter inability, without unnecessary physical effort, to procure the hair of the afore-mentioned animals, particularly in sections where they have been compelled to retreat before the advance of man, may... 