. Bacteriology in medicine and surgery. A practical manual for physicians, health officers, and students. Bacteriology. 462 BACTEBIOLOGT. growing readily at a temperature from 18° to 20° C, but best at 37°, ia milk, bouillon, and other liquid media, and in nutrient gelatin or agar, accompanied by licjuefaction of the gelatin. Growth on Gelatin. Grown on gelatin plates it develops, at room-temperature within forty-eight hours, punctiform colonies, which, when examined under a low-power lens, appear as circular disks of a pale brown color, somewhat darker in the centre, and surrounded by a smoot
. Bacteriology in medicine and surgery. A practical manual for physicians, health officers, and students. Bacteriology. 462 BACTEBIOLOGT. growing readily at a temperature from 18° to 20° C, but best at 37°, ia milk, bouillon, and other liquid media, and in nutrient gelatin or agar, accompanied by licjuefaction of the gelatin. Growth on Gelatin. Grown on gelatin plates it develops, at room-temperature within forty-eight hours, punctiform colonies, which, when examined under a low-power lens, appear as circular disks of a pale brown color, somewhat darker in the centre, and surrounded by a smooth border. The colonies grow rapidly. The Fig. 59. staphylococcus. X 1100 diameters. appearance of the growth is most characteristic. Im- mediately surrounding the colonies, which are of a pale yellow color, there is a deepening of the surface of the gelatin, due to its liquefaction. By suitable light a number of these shallow depressions with sharply de- fined outlines may be seen on the gelatin plate, having a diameter of from 5 to 10 mm., in the centres of which lie the yellow colonies. Later, the liquefaction becomes general, the colonies running together. In stick cul- tures in gelatin a white confluent growth at first appears. 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 Park, William Hallock, 1863-1939; Guerard, Arthur Rose, 1851-. New York and Philadelphia, Lea Brothers & Co
Size: 1871px × 1335px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpub, booksubjectbacteriology
