PLATE III. 
Fie. 1.—Unicettunar Arca from standing water, New 
Orleans, 1880; magnified 400 diameters by Beck’s one-fifth-inch 
objective ; not stained ; heliostat. 
Fic. 2. — Eve.ena viripis from surface of moist mud; mag- 
nified 200 diameters by Powell & Leland’s one-half-inch objective ; 
not stained ; heliostat. 
Fig. 3. — Spores or Funeus (Penicillium glaucum), New Orleans, 
1880 ; magnified 400 diameters ; Beck’s one-fifth-inch objective ; 
mounted dry ; heliostat. 
Fie. 4. — Bacreria which appear to contain endogenous spores. 
From swamp-mud, culture experiment in gelatine solution, New 
Orleans, 1880 ; magnified 1000 diameters by Zeiss’ one-eighteenth- 
inch objective. 
