Page:Tropical Diseases.djvu/551

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Table showing the Morphological and Cultural Characters of Bacillus Dysenteriæ and the Allied Group of Micro-Organisms after Twenty-four Hours' Incubation at 37º C.
Organism	Character	Motility	Flagella	Glucose peptone water	Maltose peptone water	Lactose peptone water	Saccharose peptone water	Mannite peptone water	Dexterin peptone water	Litmus milk	Potato	Gelatin stab	Indol
Bacillus typhosus	Oval rods with rounded ends 2 μ x 0·6 μ	+	8—12	A	A	0	0	A	A	A slight	Scanty moist yellowish growth	Slight white growth in 48 hours. No gas	None
Bacillus coli*	Oval rods 2—4 μ x 0·4. 0·6 μ	∓	3—4	AG	AG	AG	AG∓	AG	AG	A/Clot	Thick moist brownish growth	Slight white growth Gas bubbles	+
Bacillus enteritidis (Gärtner)	Same as typhoid	+	Peritrichous flagella	AG	AG	0	0	AG	AG	A/Alk.	Same as typhoid	Same as typhoid	∓
Bacillus paratyphosus (A. Brion-Keyser and B. Schottmüller)	Same as typhoid	+	8—12	AG	AG	0	0	AG	AG	A/Alk.	Same as typhoid„	Same as typhoid„	None
Shiga's dysentery bacillus	Fine rods with rounded ends 1 μ in length x 0·5 μ	None	None	A	0	0	0	0	0	A/Alk.	Thin grey growth	Thin slimy growth	∓
Flexner's dysentery bacillus	Fine rods with rounded ends 1 μ in length x 0·5 μ„	None	None	A	0	0	0	0	0	A/Alk.	Thin grey growth„	Thin slimy growth„	∓
Hiss and Russel's paradysentery "Y bacillus"†	Fine rods with rounded ends 1 μ in length x 0·5 μ„	None	None	A	A∓	0	0	A	0	A/Alk.	Thin grey growth„	Thin slimy growth„	∓
* Produces fluorescence in neutral red glucose peptone water							† In asylum dysentery, especially in Germany
A = Acid.			AG = Acid and gas.			0 = No change.			A/Alk. = Acid first, alkaline after further incubation.
∓ = Variable: sometimes positive, sometimes negative.

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