. A text-book of bacteriology, including the etiology and prevention of infective diseases and a short account of yeasts, and moulds, haematazoa, and psorosperms. Bacteriology. NUTRIENT MEDIA AND METHODS OF CULTIVATION. 101 squeezing through a linen cloth or a meat press. The red juice thus ohtained nmst be brought up to a litre by transferring it to a large measuring glass and adding distilled water. It is then poured into a sutfieiently large and strong beaker, and set aside after the addition of 10 grammes of peptone, 5 grammes of common salt and 11)0 grammes of best gelatine. In about half
. A text-book of bacteriology, including the etiology and prevention of infective diseases and a short account of yeasts, and moulds, haematazoa, and psorosperms. Bacteriology. NUTRIENT MEDIA AND METHODS OF CULTIVATION. 101 squeezing through a linen cloth or a meat press. The red juice thus ohtained nmst be brought up to a litre by transferring it to a large measuring glass and adding distilled water. It is then poured into a sutfieiently large and strong beaker, and set aside after the addition of 10 grammes of peptone, 5 grammes of common salt and 11)0 grammes of best gelatine. In about half an hour the gelatine is sufficiently softened, and subsequent heating iu a water-bath cairses it to ba completely. Fig. 30.—Hot Am Stekiliser. dissoh'ed. The danger of breaking the beaker may be avoided by placing a cloth, several times folded, at the bottom of the water-bath. The next process requires the greatest care and attention. Some micro-organisms grow best in a sUghtly acid, others in a neutral or slightly alkaline, medium. For example, foi- the growth and characteristic appearances of the comma bacillus of Asiatic cholera a faintly alkaline soil is absolutely essential. This slightly alkaline medium will be found to answer best for most micro-organisms, and may be obtained as follows : — With a clean glass rod dipped in the mixture, the reaction upon litmus-paper may be ascertained, and a concentrated solution of carbonate of soda must be added drop by drop, until red litmus-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Crookshank, Edgar M. (Edgar March), 1858-1928. Philadelphia, W. B. Saunders
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherphila, bookyear1897
