78 MORPHOLOGY OF THE BACTERIA. 
M. of exanthematous typhus, Hallier. 
M. relatively large, brown, having a rapid 
movement, sometimes in chains (Mycothria), in 
the blood. 
M. of intestinal typhus, Hallier. 
M. very small, in repose in the blood; larger, 
endowed with active motions, and furnished 
with contractile appendices in the dejections. 
M. of glanders, Ziirn. 
Cells free or attached to the blood globules, or 
even penetrating into their interior, sometimes 
in chains (Mycothriz) in the blood. M. in 
chains, very numerous, and endowed with rapid 
movements, in the lymphatic ganglia, the mu- 
cus of the frontal sinuses, and in the chancroid 
ulcers. 
M. of syphilis, Hallier. 
M. numerous, colorless, free or in globules, in 
gonorrhoea, the primitive ulcer, and the blood of 
persons suffering from constitutional syphilis. 
MonapDs. 
Beside the Spherobacteria are placed the Mon- 
ads, not the organisms described under this name 
by the older microscopists, comprising micro- 
phytes, spores, and infusorial animals, but the 
Monas as understood by botanists of the present 
day. Thus limited, the Monads include also, be- 
sides some microphytes related to the Spherobac- 
teria, and differing from them by their greater 
dimensions, some organisms of doubtful affinities. 
