. Micro-organisms and disease. An introduction to the study of specific micro-organisms. Microorganisms. CH. Ill] VESSELS, ETC., USED IN CULTIVATIONS 39 in the air-chamber for several hours (three to six) to a te m- perature of from 130° to 150° C. while hot they are taken out seriatim, plugged with the sterile cotton-wool, and re- placed in the air-chamber, and heated again for several hours. All this, and other operations to be described below, 'l. KjG. 4.—Hot Air-chamber for Sterilising Test-tubes, Cotton-wool, &c. An iron chamber with double wall, the inner chamber having separate fold
. Micro-organisms and disease. An introduction to the study of specific micro-organisms. Microorganisms. CH. Ill] VESSELS, ETC., USED IN CULTIVATIONS 39 in the air-chamber for several hours (three to six) to a te m- perature of from 130° to 150° C. while hot they are taken out seriatim, plugged with the sterile cotton-wool, and re- placed in the air-chamber, and heated again for several hours. All this, and other operations to be described below, 'l. KjG. 4.—Hot Air-chamber for Sterilising Test-tubes, Cotton-wool, &c. An iron chamber with double wall, the inner chamber having separate folding doors. In the inner chamber are placed the test-tubes, glasses, &c., and the cotton-wool, the latter in a loose condition. Both sets of doors are closed; and the apparatus heated by a large Fletcher's burner. A thermometer passing from the inner chamber through the upper wall indicates the temperature of the chamber. The hot-air apparatus can, according to the requirements of the laboratory, be constructed of larger size than the one here depicted. I use one that is made four or five times this size and is divided into several compartments. may appear to some rather tedious'and unnecessarily com- plicated, but it cannot be too strongly insisted on that in these matters one cannot be too scrupulous. A slight re- laxation may, and occasionally is, followed by disastrous consequences in the shape of accidental contamination, and consequent loss of materials prepared at the cost of much. 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 Klein, E. (Edward), 1844-1925. London, Macmillan and Co. , Ltd.
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherlondo, bookyear1896
