. Poultry production. Poultry. THE INCUBATION OF THE EOG 197 expand and contract readily with rising and falling tempera- tures. This kind of thermostat is most used because it is the cheapest. When new and in perfect condition they are fully as sensitive as the bimetallic type, but are likely to lose their sensitiveness after a season's use or even before. Heating Systems.—^There are three methods of heating incubators in common use, with a fourth that has been frequently attempted but which has not yet been put into Fig. 99. l^xy^yry-yrxYin. Please note that these images are extracted from s
. Poultry production. Poultry. THE INCUBATION OF THE EOG 197 expand and contract readily with rising and falling tempera- tures. This kind of thermostat is most used because it is the cheapest. When new and in perfect condition they are fully as sensitive as the bimetallic type, but are likely to lose their sensitiveness after a season's use or even before. Heating Systems.—^There are three methods of heating incubators in common use, with a fourth that has been frequently attempted but which has not yet been put into Fig. 99. l^xy^yry-yrxYin. 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 Lippincott, William Adams, 1882-1931. Philadelphia, Lea & Febiger
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishe, booksubjectpoultry
