CLASSIFICATION OF THE BACTERIA. 67 



Cells cylindrical . BACTERIUM, Duj. 

 2. Cells with phyco- 

 chrome, larger : 



Cells spherical . . APHANOCAPSA, Nag. 

 Cells cylindrical . APHANOTHECE, Nag. 

 b. Intercellular substance 

 formed of several mem- 

 branes enclosed one with- 

 in the other : 



Cells spherical . . GLCEOCAPSA, Kg. 

 Cells cylindrical . GLCEOTHECE, Nag. 



C. Cells united in glairy fam- 

 ilies of definite form : 

 a. Families of a single layer 

 of cells disposed in plates : 



1. Cells in fours form- 

 ing a plane surface . MERISMOPEDIA, Meyen. 



2. Cells without regular 

 arrangement, forming 

 a curved surface : 



Cells spherical, fam- 

 ilies with reticu- 

 lated rupture . . CLATHROCYSTIS, Henfr. 

 Cells cylindrical, cu- 

 neiform , families 

 divided by con- 

 striction . . . CCELOSPHLERIUM, Nag. 

 b Families with several lay- 

 ers of cells, united in spher- 

 ical corpuscles : 



1. Number of cells de- 

 termined : 



Cells spherical, col- 

 orless, arranged 

 in fours . . . SARCINA, Goods. 



