Progressive Phases of Spirillum. By Dr. B. L. Maddox. 719 
the foetid water having been put back on the garden-wall, was unfor- 
tunately knocked over by some animal, much to my regret. 
To resume briefly, the characters are recorded from a stage of 
apparently simple homogeneous plasm through a few more or less 
known changes, up to the point, which may be one of novelty, when 
the organism becomes deeply notched, and the ends segmented into a 
spore-like body retaining or not the flagellum. 
