160 BIBLIOGRAPHY 



1907. Keeble, F. and Gamble, F. W. The Origin and Nature of 

 the Green Cells of Convoluta roscoffensis. Q. J. M. S. LI. 

 Part 2. 1907- 



1908. Keeble, F. The Yellow-brown cells of Convoluta paradoxa. 

 Q. J. M. S. LII. Part 4. 1908. 



1909. Loeb, J. Experimental study of the influence of Environ- 

 ment on Animals. Essay in Darwin and Modern Science. 

 Univ. Press, Cambridge. 



