444 



THE BEGINNINGS OF LIFE. 



i " 



.1000 



seen more than a dozen very active Monads^ 



in diameter each being provided with a long rapidly- 



FIG. 31. 



Bacteria, Tornlce, Protamoebce, Monads, &c., from an infusion of Common 



Cress. ( X 800.) 



moving flagellum, with which neighbouring granules 

 were lashed about l . There were many smaller motion- 

 less spherules, of different sizes, whose body- substance 

 presented a similar appearance to that of the Monads. 

 There were also several unjointed Bacteria^ presenting 

 most rapid progressive movements, accompanied by 

 rapid axial rotations; many Torufa-cells of different 

 kinds, and coarser fungus spores, some of them with 

 segmented protoplasmic contents; and lastly, some 

 mycelial or algoid filaments, containing tolerably equal 

 blocks of colourless protoplasm within an investing 

 sheath. 



1 A drop containing several of the Monads was placed for about five 

 minutes on a glass slip, in a warm-water oven maintained at a tempera- 

 ture of J 40 F. All the movements of the Monads ceased from that 

 time ; and they never again showed any signs of life. 



