Until recently, practically nothing was known about the morphogenetic processes concealed in this metamorphosis, about what cranial structures take part in it, and about the exact way in which the cetacean skull becomes transformed during embryogeny. ❋ Unknown (2010)
His study of embryogeny impressed on him the frequent occurrence of deviations from the norm in individual development “Errors” arise that produce new characteristics of organisms and are then trans - mitted to offspring. ❋ THOMAS A. GOUDGE (1968)
The hypothesis explains also the way in which the orderly succession of stages in embryogeny is brought about, for we can readily understand that the embryo will not remember any stage until it has passed through the stage immediately preceding it. ❋ Unknown (N/A)
The primitive Annelid mouth, however, does not appear in the embryogeny of Vertebrates, for the great development of the brain crowds it out of existence. ❋ Unknown (N/A)
But he still holds fast to the main thesis of transcendentalism -- the absolute unity of plan of all animals, vertebrate and invertebrate alike, [322] the gradual perfecting of organisation from monad to man, the repetition in the embryogeny of the higher animals of the "zoogeny" of the lower. ❋ Unknown (N/A)
The number of stages in embryogeny is proportionate to the complexity of the adult; the younger the embryo the simpler its organs -- such is the general formula of the relation between the embryo and the adult. ❋ Unknown (N/A)
Opinions differed considerably as to the primitive mode of origin of the two-layered sac which was very generally admitted to be of constant occurrence in early embryogeny. ❋ Unknown (N/A)
Baer's law that the characters of the large groups appear earlier in embryogeny than the characters of the lesser classificatory divisions. ❋ Unknown (N/A)
Mr. Brown, that it was a disadvantage to be able to draw, I always fancy he had Bauer in his mind's eye; for had he been a writer and not a drawer, before 1800, in great probability we should have known nearly as much of embryogeny as we do now. ❋ William Griffith (N/A)
Fabrizio of Acquapendente (Fabr. ab Aquapendente, 1537-1619), who worked in the field of embryogeny and studied carefully the valves in the veins, and finally Giulio Casserio (1561-1619), who published a series of anatomical charts. ❋ 1840-1916 (1913)
The correspondence between comparative embryogeny and comparative anatomy would remain too. ❋ Henri Bergson (1900)
Paleontology, in spite of the insufficiency of its evidence, invites us to believe it has; for, where it makes out the order of succession of species with any precision, this order is just what considerations drawn from embryogeny and comparative anatomy would lead any one to suppose, and each new paleontological discovery brings transformism a new confirmation. ❋ Henri Bergson (1900)
I will now pass on to consider the embryogeny of the Metazoa, beginning at its earliest stage in the fertilization of the ovum. ❋ George John Romanes (1871)
At the stage which we have now reached a question arises, a question of major importance, touching the most nebulous aspect of embryogeny. ❋ Jean-Henri Fabre (1869)
_complete_ knowledge we now have of vegetable embryogeny. ❋ William Griffith (N/A)
Comparative anatomy was thus seen to be repeated and reproduced by embryogeny "(xii., p. 85). ❋ Unknown (N/A)
Nature in a certain measure, the essential structure of the organism, and demonstrate the laws that manifest themselves during embryogeny "(p. vi.). ❋ Unknown (N/A)
