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This is a large sheet, 31/4 by 3% feet, on which are recorded the cultural characteristics on a large number of media, the morphology, the reaction to Gram's stain and miscellaneous properties of thirty-nine different bacteria. Brief remarks are added on the Amœba dysenteriœ, Leishman's body and the trypanosomes. Spaces are also left blank, presumably for the addition of the results on other media. Although the chart is not asserted to be exhaustive, omissions of certain phenomena, like the reaction of the staphylococci, streptococci and other organisms to the Gram stain, make it less useful. The convenience, however, of having the large number of characteristics of the more common organisms on one large page will undoubtedly appeal to most laboratory workers.
The Bacteriologist's Aid to Memory (A Handy Reference Sheet for the Laboratory).. JAMA. 1910;LIV(20):1644–1645. doi:10.1001/jama.1910.02550460058021
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