FEEDS

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and allow to stand for 30 minutes. The nitric acid decomposes ammonium
mucate, precipitating mucic acid; collect this on a weighed Gooch or alundum
crucible, wash with 10 to 15 cc of water, then with 60 cc of alcohol, and
finally several times with ether. Dry at 100° for 3 hours, cool and weigh.
Multiply the weight of mucic acid by 1.33, which gives galactose, or by
1.197, which gives galactan. Calculate the per cent of galactan in the
feed.