Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: May 7, 2025
Or, the procedure may be to reduce the processes of a developmental or morphogenetic category to processes of stimulation in general, and then it is believed, or even demonstrated, that chemo-physical analogies or explanations can be found for them.
But forms, which in periods of rapid progress were severed from others after a short duration, must have impressed themselves less deeply upon the developmental history of their descendants, than those which repeated themselves unchanged, through a long series of successive generations in periods of rest.
We have the faintest possible indication in the structure of some mites, and of the Tardigrades and Pentastoma, where there is a striking recurrence, as we may term it, to a worm-like form, readily noticed by every observer, whatever his opinion may be on the developmental theory. In the Demodex we see a tendency of the mite to assume under peculiar circumstances an elongated, worm-like form.
Coming now to the mammalia, it might seem that we have reached forms so highly developed that they would not exhibit the same kind of developmental history, but would have their own mode of growing up.
Expenditures for construction of roads and other developmental works in the national forests, parks, and other public lands, and for capital outlays for fish and wildlife development will increase from below 9 million dollars in the fiscal year 1946 to 24 million dollars in the fiscal year 1947.
The historical record preserved in developmental history is gradually EFFACED as the development strikes into a constantly straighter course from the egg to the perfect animal, and it is frequently SOPHISTICATED by the struggle for existence which the free-living larvae have to undergo.
Thomas Aquinas, Sturm and Philip Melanchthon, Comenius, Pestalozzi, Rousseau, Herbart, and Froebel still live in the schools of to-day. Their genius speaks to us through the organization of subject-matter, through the art of questioning, through the developmental methods of teaching, through the use of pictures, through objective instruction, and in a thousand other forms.
Moreover, the ostensible serious occupation of the upper class is that of government, which, in point of origin and developmental content, is also a predatory occupation. The only class which could at all dispute with the hereditary leisure class the honor of an habitual bellicose frame of mind is that of the lower-class delinquents.
Not only such general geographical studies, but such social interpretations as those above indicated have long been in progress: witness the labours of whole schools of historians and critics, among whom Montsquieu and his immediate following, or in more recent times Buckle and Taine, are but the most prominent; witness the works of geographers like Humboldt, Ritter, Reclus, or of developmental technologists like Boucher de Perthes and regional economists like Le Play.
But we now know that embryology is even more direct in its proof that organic transformation is natural and real; while at the same time there is a completeness in the full series of developmental stages connecting the one-celled egg with the adult creature that must be forever lacking in the case of the fossil sequence of species.
Word Of The Day
Others Looking