60 



POPULAR ILLUSTRATIONS OF 



sure that their beautiful shapes have only to be seen by our micro- 

 scopists to make them forget Diatoms and Desmidiae in their anxiety 



Fig. l.Eucecryphalus Schnltzei (magnified 150 diam.). The whole animal living. The 

 central capsule with the middle of the concave side of the silicious shell shown, deeply 

 cleft in four unequal parts containing very small yellow cells. 



Fig. 75. Thalassicolla pelagica (magnified 15 diam.). The animal alive. The outer part 

 consisting of numerous cells containing yellow bodies. The central capsule has oil 

 globules round the margin, and a dark proto-plasmatic inner vesicle. 



to possess them ; for, along with the beautiful cases of these, 

 they combine all the attractions of living and moving beings, and 

 their interest is by no means confined to their external coverings. 



