VOLVOX 



39 



stigmata or eye-spots are concentrated both in the colony as a whole 

 and in the cell-individuals towards that pole of the colony which is in 



Fig. 17. 



Volvox. A, View of a whole colony containing a single daughter-co'ony ; B, a single cell-individual 

 very highly magnified ; C, part of colony as seen in surface view under a high power ; D, a single 

 microgamete very highly magnified, b, Protoplasmic bridge ; c.v, contractile vacuoles ; chr, 

 chromatophore of microgamete ; M , macrogametocyte ; n, nucleus ; at, stigma. 



front during movement. Putting it crudely and not quite accurately 

 " the eyes look forward." 



The features that make Volvox a creature of very special scientific 

 interest and importance are connected with the reproductive processes 



