. Annual report of the Missouri State Board of Agriculture. Missouri. State Board of Agriculture; Agriculture -- Missouri. Improvement of Missouri Herds. 375 machine must ahvays be made to balance. In case there is only one sample to be tested, a bottle of water may be used for a balance. Fifth—Start the machine slowly, gradually increasing the speed until the test bottles are whirling at a rate of 1,000 to 1,200 revolutions per minute. (By counting the number of revo- lutions made by the pockets for each turn of the crank it can be easily calculated how many turns of the crank will be necessa
. Annual report of the Missouri State Board of Agriculture. Missouri. State Board of Agriculture; Agriculture -- Missouri. Improvement of Missouri Herds. 375 machine must ahvays be made to balance. In case there is only one sample to be tested, a bottle of water may be used for a balance. Fifth—Start the machine slowly, gradually increasing the speed until the test bottles are whirling at a rate of 1,000 to 1,200 revolutions per minute. (By counting the number of revo- lutions made by the pockets for each turn of the crank it can be easily calculated how many turns of the crank will be necessary to achieve the required speed.) Turn steadily for five minutes, then gently stop the machine, and with the pipette carefully, in order that no bottle be run over, add clean, soft hot water into the test bottle until the water and fat rise two-thirds of the way up the neck of the bottle, then close the lid, and whirl as before for a period of two minutes. Now the test is made, and simply re- quires Showing how to read the test. Spread the dividers from the extreme bottom to the extreme top of the fat, then place the lower point at O and read the number at the top point. fat in this case. Sixth—With a sample compass or dividers measure the fat in the neck of the test bottle, as shown in figure 23. The points of the comipass should extend from the very bottom to the very top of the fat, as shown in the cut. Read the fat while hot, or if it gets cool warm it up to about 130 or 135 Fahr. before reading. Do not count out anything for the little cup or maniscus on the top of the fat, Being careful not to change the spread of the. 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 Missouri. State Board of Agriculture. Jefferson City, Mo. : Missouri State Board of Agriculture
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