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And the embryo may, and often does, shorten the path by "short-cuts" impossible to its original ancestor. Still it will in general hold true, and may be recognized as a law of vast importance, that any individual during his embryonic life repeats very briefly the different stages through which his ancestors have passed in their development since the beginning of life.
Nothing seems to him more beautiful than his embryo garden; here, he is more than the monarch of the island; he is a proprietor! Thanks to the garden, Selkirk sees with resignation the two long months of the rainy season pass away. When the heavy torrents render the paths impassable, he consoles himself by thinking that they aid in the germination of his seeds, in the rooting of his young plants.
Why should the system of classification coincide with the order of geologic occurrence, and this with the series of embryonic stages? Above all, why should the embryos of bird and perch form their tails by such a roundabout method? Why should the embryo of the bird have the tail of a lizard? No one could give any satisfactory explanation, although the facts were undoubted. Mr.
And we grant all this, accompanying the permission with strict orders to prevent any embryo which may come into being from seeing the light; and if any force a way to the birth, the parents must understand that the offspring of such an union cannot be maintained, and arrange accordingly. That also, he said, is a reasonable proposition.
The letter ran: It is known to the writer that Lord Dumbello has arranged with certain friends how he may escape from his present engagement. I think, therefore, that it is my duty as a Christian to warn you of this. Yours truly, Now it had happened that the embryo Mrs.
None the less, if the transition from a gilled tadpole to the adult with lungs means an evolution of amphibia from fishlike ancestors, then the change of a chick embryo with gill-clefts into the fledgling without them is most reasonably interpreted as proof that birds as well as amphibia have had ancestors as simple as fishes.
He at once sagaciously beheld the embryo lawsuit and contingent controversy about to result from the proposition; and, in his mind, with a far and free vision, began to compute the costs and canvass the various terms and prolonged trials of county court litigation.
Until recently it was regarded as a general rule that, by the partial segmentation of the vitellus a germinal disc was formed, and in this, corresponding to the ventral surface of the embryo, a primitive band. According to Mr.
It may be acknowledged difficult to point out in all cases with perfect exactitude, the precise line of demarkation between a proper and an inordinate pursuit of worldly good, and thus to detect the first commencement of an avaricious temper, the embryo germ of an apostate disposition; but at least no difficulty should remain with the individual himself in deciding upon his own actual state, even though he be not guilty of flagrant immoralities, if conscious that his heart is in his covetousness if the love of gain have usurped the dominion of his soul, and dethroned the love of God if he gladly embrace every opportunity of promoting his worldly interest, and obey but slowly and reluctantly the calls of duty.
If we examine the embryo at an early stage of development we see that the hind end is the body stalk, this stalk in later stages becoming part of the umbilical cord. This process of sexual differentiation is highly complex, so that it cannot yet be said that there is complete agreement among investigators as to its details.
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