. Agricultural bacteriology; a study of the relation of germ life to the farm, with laboratory experiments for students, microorganisms of soil, fertilizers, sewage, water, dairy products, miscellaneous farm products and of diseases of animals and plants. Bacteriology, Agricultural. 14 THE GEKBRAL CHARACTS:rS 01^ MlClJ-OOllGANISMg bacteria they grow out into long threads and often branch. Their chief similarity to true bacteria lies in their size and staining properties. Many types of Actinomyces occur in soil and appear as round, white opaque colonies often with an extensive brown halo upon t
. Agricultural bacteriology; a study of the relation of germ life to the farm, with laboratory experiments for students, microorganisms of soil, fertilizers, sewage, water, dairy products, miscellaneous farm products and of diseases of animals and plants. Bacteriology, Agricultural. 14 THE GEKBRAL CHARACTS:rS 01^ MlClJ-OOllGANISMg bacteria they grow out into long threads and often branch. Their chief similarity to true bacteria lies in their size and staining properties. Many types of Actinomyces occur in soil and appear as round, white opaque colonies often with an extensive brown halo upon the plates described in Experiment No. 24. Thus it will be seen that the term bacteria applies to the whole group of organisms that multiply by division, the study of which constitutes the study of bacteriology, while the term Bacterium refers to a single ^vision of the group. The names Bacillus and Bac- terium are sometimes confused; for example, the tubercle bacillus, according to the above classification, is a Bacterium, since it is non- motile and does not produce spores; and indeed recent study indicates that it belongs to the group of higher bacteria; but the name bacillus was given it years before the above distinctions were recognized, and we will still use the common name. Some other bacteria, named twenty years ago, retain their earlier names in some books, but they are slowly having their names brought into harmony with the above distinctions. The term Coccus is applied to any spheri- cal organism of the group bacteria. This classification gives only what are recognized as the genera of bacteria. A further classification of the group into species is at the present time in a condition of the greatest confusion. Many hundred varieties have been described by different bacteriologists, but there is great difficulty in giving any distinctive description of such minute organisms, which have so few characters; and it is quite uncertain whether these many hundred described sp
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbacteriologyagricult
