The evolution theory . dition regeneration, are placed by nature. In this case there can be no doubt on that point: they are the KEGENERATION 21 cells on the posterior wall and the margin of the iris. And it iscertainly not the absence of the lens which gives rise to its renewal,as would necessarily be the case if it were due to the dominance of anadaptive force. If the lens, instead of being excised, be simplypressed back into the vitreous humour occupying the cavity of theeye, a new lens is developed all the same from the irritated margin ofthe pupil. And if by chance this margin has been ir
The evolution theory . dition regeneration, are placed by nature. In this case there can be no doubt on that point: they are the KEGENERATION 21 cells on the posterior wall and the margin of the iris. And it iscertainly not the absence of the lens which gives rise to its renewal,as would necessarily be the case if it were due to the dominance of anadaptive force. If the lens, instead of being excised, be simplypressed back into the vitreous humour occupying the cavity of theeye, a new lens is developed all the same from the irritated margin ofthe pupil. And if by chance this margin has been irritated in twoplaces while extraction of the lens was being performed, then twosmall lenses Avill develop (Fig. 99, B). Indeed, several may begin todevelop at the posterior wall of the iris, although they do not attainto full development; mechanical irritation of any part of this cell-layer is responded to by the formation of lenses. This surely disposesof the mystical nimbus which would dazzle us with a new force of A.
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Keywords: ., bookauthorthomsonj, bookcentury1900, bookdecade1900, bookyear1904
