517 



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Nachdruck verboten. 



Models to illustrate Ciliary Action. 



B}^ E. a, Schäfer, Edinburgh. 

 With 2 Figures. 



In a recent communication ^) I had occasion to restate a hydraulic 

 theory of ciliary action which was originally published in the Pro- 

 ceedings of the Royal Society, 1891, Vol. 49, p. 198, and to present 

 a series of facts and observations which had since come to light and 

 which appeared materially to support the probability of such mode of 



1) Diese Arbeit ist mir leider nur durch das Referat in Wilson, 

 „The Cell" bekannt. 



2) Anat. Anz., Bd. 24, 1904, p. 497. 



