. Annual report of the New York State College of Agriculture at Cornell University and the Agricultural Experiment Station. New York State College of Agriculture; Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 1846 The Cornell Reading-Courses the isinglass has been broken, it should be replaced in order to prevent fumes from getting into the egg chamber and in order to protect the flame from drafts. The different parts of the heater are shown in Fig. 58. Felts and diaphragms One type of incubator has felts or burlap diaphragms in the bottom. The operator
. Annual report of the New York State College of Agriculture at Cornell University and the Agricultural Experiment Station. New York State College of Agriculture; Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 1846 The Cornell Reading-Courses the isinglass has been broken, it should be replaced in order to prevent fumes from getting into the egg chamber and in order to protect the flame from drafts. The different parts of the heater are shown in Fig. 58. Felts and diaphragms One type of incubator has felts or burlap diaphragms in the bottom. The operator should be sure that these are arranged properly before undertaking to heat the incubator. To remove these felts or diaphragms while eggs are being incubated, except as advised by the maker of the incubator, would greatly lessen its hatching power in most cases. The thermometer When an incubator is in operation, the thermometer should be kept in the place designated by the manufacturer. No other make of ther-. FiG. 59.—Several styles of thermometers, i and 2, Hanging; j and 4, contact; 5 and 6, standing mometer than the one recommended by the manufacturer of the incubator should be used. The most common types of thermometers are the contact, the standing, and the hanging (Fig. 59). A new thermometer should be tested before it is used; an old one should be tested each season. In order to test a thermometer successfully, a physician's clinical thermometer should be used as a standard, or any standard thermometer that registers correctly between 100° and 110° F. The two bulbs should be dipped at the same time into water registering about 100° F. If the temperature recorded by the thermometer being tested varies from the temperature recorded by the thermometer being used as a standard, the amount of variation should be marked on the back of the thermometer or on a tag tied to it, and allowance should be made. Please note that these images are extracted from scanned page images
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