An Introduction to Practical Bacteriology for Physicians, Chemists And Students
The book An Introduction to Practical Bacteriology for Physicians, Chemists And Students was written by author Migula, Walter, 1863- Here you can read free online of An Introduction to Practical Bacteriology for Physicians, Chemists And Students book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is An Introduction to Practical Bacteriology for Physicians, Chemists And Students a good or bad book?
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In conclusion, it may be mentioned that in a great many cases a much simpler apparatus than the incuba- tor may be used. The student can, at small cost, construct it for himself, only, of course, it would not be suitable for very accurate scientific experiments. A strong plate of zinc, of the necessary size, is placed on a strong wire tripod, and upon it a box made of strong cardboard is put, the size and get up of which may be varied according to taste. The most con- venient size I found to be... 30 cubic cm., outside measurement. A second cardboard box is placed in this one, smaller by 5 cm. in every direction than the first, and between the two a thick layer of cotton-wool is inserted. The boxes must lie closely upon the sheet of zinc. A hole is made, into which a thermometer fits as tightly as possible, an,d all chinks are then care- fully stopped up with cotton-wool. A small paraffin CULTIVATIONS AT HIGHER TEMPERATURES. 89 lamp, without a cylinder, is then placed under the zinc plate, upon which the cardboard boxes are placed, and their temperature is regulated by screwing the lamp up and down until the required temperature is per- manently obtained.
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