444 THE BEGINNINGS OF LIFE. 



seen more than a dozen very active Monads^ 40*00" 

 in diameter each being provided with a long rapidly- 



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

 Cress. ( X 800.) 



moving flagellum, with which neighbouring granules 

 were lashed about *. 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 Torula- cells of different 

 kinds, and coarser fungus spores, some of them with 

 segmented protoplasmic contents j 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 i4oF. All the movements of the Monads ceased from that 

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



