"Bacillus subtilis, Cohn, and Spirillum undula, Ehrenb." — The Encyclopedia Britannica, 1910

Bacillus Subtilis

"Bacillus subtilis, Cohn, and Spirillum undula, Ehrenb." — The Encyclopedia Britannica, 1910

"Spore-formation in Vibrio-like (c) and Spirillum-like (a, b, d) Schizomycetes." — The Encyclopedia Britannica, 1910

Schizomycetes

"Spore-formation in Vibrio-like (c) and Spirillum-like (a, b, d) Schizomycetes." — The Encyclopedia…

"Spirillum containing many spores (a), which are liberated at b by the breaking up of the parent cells." — The Encyclopedia Britannica, 1910

Spirillum

"Spirillum containing many spores (a), which are liberated at b by the breaking up of the parent cells."…

"Spirillum Rubrum, Esmarsch." — The Encyclopedia Britannica, 1910

Spirillum Rubrum

"Spirillum Rubrum, Esmarsch." — The Encyclopedia Britannica, 1910

"Spirillum Rubrum, Esmarsch." — The Encyclopedia Britannica, 1910

Spirillum Rubrum

"Spirillum Rubrum, Esmarsch." — The Encyclopedia Britannica, 1910

"Spirillum Undula, Ehrunb." — The Encyclopedia Britannica, 1910

Spirillum Undula

"Spirillum Undula, Ehrunb." — The Encyclopedia Britannica, 1910

"Spirillum Undula, Ehrunb." — The Encyclopedia Britannica, 1910

Spirillum Undula

"Spirillum Undula, Ehrunb." — The Encyclopedia Britannica, 1910