A manual of human physiology, including histology and microscopical anatomy, with special reference to the requirements of practical medicine . pon or into asuitable medium, they germinate and reproduce organisms similar to those fromwhich they sprung. The process of spore-production is illustrated in Fig. 147, 7, 8,9, and in 1, 2, 3, 4 is shown the process of germination in the butyric acid spores are very tenacious of life; they may be dried when they resist death fora very long time; some of them are not killed by being boiled. Some fungi exhibittheir vital activities only in the
A manual of human physiology, including histology and microscopical anatomy, with special reference to the requirements of practical medicine . pon or into asuitable medium, they germinate and reproduce organisms similar to those fromwhich they sprung. The process of spore-production is illustrated in Fig. 147, 7, 8,9, and in 1, 2, 3, 4 is shown the process of germination in the butyric acid spores are very tenacious of life; they may be dried when they resist death fora very long time; some of them are not killed by being boiled. Some fungi exhibittheir vital activities only in the presence of 0 (Aerobes), while others require theexclusion of Q (Anaerobes, Pasteur). According to the products of their action,they are classified as follows:—Those that produce fermentations (zymogenicschizomycetes); those that produce pigments (chromogenic); those that producedisagreeable odours, as during putrefaction (bromogenic); and those that whenintroduced into the living tissues of other organisms produce pathological condition*,and even death (pathogenic). All these different kinds occur in the human body. D1 5 s 6 I 0 /4 A. Fig. 147. A, Bacterium actti in the form of—cocci (1); diplococci (2); short rods (3), andjointed threads (4, 5). B, Bacillus butyricus—(1) isolated spores; (2, 3, 4)germinating condition of the spores; (5, 6) short and long rods; (7, 8, 9)formation of spores within a cellular fungus. When we consider that numerous fungi are introduced into the intestinalcanal with the food and drink—that the temperature and other conditions withinthis tube are specially favourable for their development; that there also they meetwith sufficient pabulum for their development and reproduction—we cannotwonder that a rich crop of these organisms is met with in the intestine, and thatthey produce these numerous decompositions. I. Fermentation of the Carbo-hydrates.—(1.) Bacterium lacticum(Cohn), (Ferment lactique, Pasteur) are biscuit-shaped cells, T5-3 f
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectphysiology, bookyear1
