. A text-book of animal physiology [microform] : with introductory chapters on general biology and a full treatment of reproduction, for students of human and comparative (veterinary) medicine and of general biology. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. rganisms of the help of stimated at , and repro- which new ause of the a quiescent form) they. 10. Ml nee M tto TWuU of km. Is poHililj onlr • Mtlncitate. ' seoreted by PARASITIC ORGANISMS. 19 Bacteria grow and reproduce in Pasteur's solution, render- ing it opaque, as well as in almost
. A text-book of animal physiology [microform] : with introductory chapters on general biology and a full treatment of reproduction, for students of human and comparative (veterinary) medicine and of general biology. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. rganisms of the help of stimated at , and repro- which new ause of the a quiescent form) they. 10. Ml nee M tto TWuU of km. Is poHililj onlr • Mtlncitate. ' seoreted by PARASITIC ORGANISMS. 19 Bacteria grow and reproduce in Pasteur's solution, render- ing it opaque, as well as in almost all fluids that abound in proteid matter. That such fluids readily putrefy is owing to the presence of bacteria, the vital action of which suffices to break asunder complex chemical compounds and produce new ones. Some of the bacteria reqture oxygen, as BaciUus cm- tkracis, while others do not, as the organism of putrefaction. Bacterium termo. Bacteria are not so sensitive to slight variations in tempera- ture as most other organisms. They can, many of them, with- stand freezing and high temperatures. All bacteria and all germs of bacteria are killed by boiling water, though the spores are much more resistant than the mature organisms themselves. Some spores can resist a dry heat of 140" C. The spores, like Torula and Protococcus, bear drying, with- out loss of vitality, for considerable periods. That different groups of bacteria have a somewhat different life-history is evident from the fact that the presence of one checks the other in the same fluid, and that successive swarms of different kinds may flourish where others have ceased to live. That these organisms are enemies of the constituent cells of the tissues of the highest mammals has now been abundantly demonstrated. That they interfere with the normal working of the organism in a great variety of ways is also clear; and certain it is that the harm they do leads to aberration in cell- life, however that may be
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Keywords: ., bookauthormillswes, bookcentury1800, bookdecade1880, bookyear1889
