506 TRANSACTIONS OF THE CANADIAN INSTITUTE. Vor. Vir 
FIGs. 21-29. —Saccharomyces Ludwigii, Corrosive sublimate 8 hours, alcohol, Delafield’s 
hematoxylin (very dilute) 17 hours. x 3,000. 
FIGS. 30-33. —Saccharomyces Ludwigiz, Alcohol, Delafield’s hzmatoxylin (very dilute) 
48 hours, balsam. x 2,400. 
FIGS. 34-35.—Saccharomyces Ludwigit. Corrosive sublimate, alcohol, Delafield’s hama- 
toxylin (very dilute) 18 hours. x 2,400. 
Fics. 36-38.—Saccharomyces Ludwigit, Flemming’s fluid, iron-alum haematoxylin, 
balsam. x 2,000. 
Fics. 39-41.—Saccharomyces Ludwigit. Artificial gastric juice, 96 hours, iron-alum 
haematoxylin, eosin, balsam. x 2,000. 
Fics. 42-49.—Saccharomyces Ludwigit. Alcohol, glycerine and ammonium hydrogen 
sulphide 10 days. x 3,000. 
Fics. 50-51.—Saccharomyces Ludwigit. Alcohol, glycerine and ammonium hydrogen 
sulphide 6 days. x 2,250. 
FIGs. 52-55.—Saccharomyces Ludwigit. Alcohol, glycerine and ammonium hydrogen 
sulphide 10 days. x 2,250. 
Fic. 56.—Saccharomyces Ludwigit. Alcohol, nitric-molybdate 5 hours, phenylhydrazin 
hydrochloride, balsam. x 3,000. 
Fics. 57-58 a-d.—Mycelial forms growing with Saccharomyces Ludwigit in sap cultures. 
Corrosive sublimate, haematoxylin, halsam. x 3,000. 
FIG. 59 a-c.—Beggtatoa alba. ‘‘ Cocci,” ‘*Comma,” and ‘‘Spirillum” forms. Corrosive 
sublimate, haematoxylin. x 3,000. 
Fic. 60.—Zegevatoa alba, ‘‘ Leptothrix” forms. Picric acid, picrocarmine, hematoxylin. 
x 3,000. 
Fic. 61.—Segetatoa mirabilis. Alcohol, nitric-molybdate, 5 hours, phenylhydrazin hydro- 
chloride, balsam. x 1,334, 
