320 E. M. NELSON ON A SALT-WATER MONAD. 



out ; but it as quickly disappeared. I had no means of measuring an 

 object at band, but the organism in its spherical form was about the 

 size of a salivary corpuscle. I regard the motion of the particles 

 inside these monads as due to free-swimming bacteria and not to 

 Brownian movement ; for when a salivary corpuscle bursts the 

 movement ceases, and the particles do not swim away as in the 

 case of this monad. There are, moreover, no rod-shaped bodies 

 in the salivary corpuscle. 



