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Updated: June 13, 2025
Examine under the microscope a bit of the above white deposit. Add a few drops of very dilute solution of iodine. Each granule becomes blue, while the markings become more distinct. Experiment 37. Examine a few of the many varieties of other kinds of starch granules, as in rice, arrowroot, etc. Press some dry starch powder between the thumb and forefinger, and note the peculiar crepitation.
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