The theory and practice of infant feeding, with notes on development . Fig. 13.—Showing Formation of Spores. (Conn.) 82 INFANT FEEDING. when placed under favorable conditions will germinateand develop into active bacteria. Many of the harmfulchanges in milk are caused by spore-bearing #° Fig. 14.—a, Spheres; 6, rods; c, spirals. (Conn.) Classification of Bacteria.—Bacteria are divided ac-cording to their form into three groups: 1. Spherical bacteria—coccus. 2. Rod-shaped bacteria—bacillus and bacterium. 3. Spiral bacteria—spirillum.

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinfants, bookyear1902