Something which is called mind or consciousness is severed from the physical organs of activity. 约翰·杜威.民主与教育.
Hence in the several fishes furnished with electric organs, these cannot be considered as homologous, but only as analogous in function. 查尔斯·达尔文.物种起源.
Pure species have of course their organs of reproduction in a perfect condition, yet when intercrossed they produce either few or no offspring. 查尔斯·达尔文.物种起源.
It is an active control of the environment through control of the organs of action. 约翰·杜威.民主与教育.
The spontaneous development of our organs and capacities constitutes the education of Nature. 约翰·杜威.民主与教育.
Then it operates to call out mechanical reactions, ability to use the vocal organs to repeat statements, or the hand to write or to do sums. 约翰·杜威.民主与教育.
The lips and vocal organs, and the hands, have to be used to reproduce in speech and writing what has been stowed away. 约翰·杜威.民主与教育.
Besides the avicularia, the polyzoa possess curious organs called vibracula. 查尔斯·达尔文.物种起源.
I have now given the leading facts with respect to rudimentary organs. 查尔斯·达尔文.物种起源.
Rudimentary organs, from being useless, are not regulated by natural selection, and hence are variable. 查尔斯·达尔文.物种起源.
The organs are so disposed as to produce the passion; and the passion, after its production, naturally produces a certain idea. 戴维·休谟.人性论.
Rudimentary organs will speak infallibly with respect to the nature of long-lost structures. 查尔斯·达尔文.物种起源.
Certain compound animals, or zoophytes, as they have been termed, namely the Polyzoa, are provided with curious organs called avicularia. 查尔斯·达尔文.物种起源.
Ants, however, work by inherited instincts and by inherited organs or tools, while man works by acquired knowledge and manufactured instruments. 查尔斯·达尔文.物种起源.
The start is from native activities of the vocal apparatus, organs of hearing, etc. 约翰·杜威.民主与教育.