Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.
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Preliminary to studies on the bacterial flora of cultivated soils, the writer undertook an arrangement of the several hundred species of bacteria already described, with the view of identifying the forms isolated, or at least of determining whether they were new to science. The labor involved in this arrangement has been so great that it was decided to embody the results in the present form that others might have the advantage of them. The writer does not claim that the system of arrangement is perfect or not open to criticism. The best use only could be made of the facts and material available. The present tables serve, therefore, only for purposes of identification, and not necessarily for those of classification. For this reason the present book has been termed a Manual of Determinative, rather than one of Systematic, Bacteriology. To the student working in the laboratory the determination of unknown bacteria has been almost impossible, except with the expenditure of an amount of labor which was impracticable. With the use of the present manual it is believed that the teacher can place a given culture in the hands of his pupil and expect him to determine it, as is done with other organic forms. It is therefore hoped that the present work will serve a useful purpose as a laboratory manual. The chapter on morphology has been appended in order to make clearer the system of classification into orders and genera.
(Typographical errors above are due to OCR software and don't occur in the book.)
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