The experiments are, in general, the usual ones found in laboratory manuals, changed of course in accordance with our experience, and they were chosen for their teaching value and for the good all-round practical manipulation involved. There are only a few innovations. Menthone and menthone oxime illustrate typical reactions even though their formulas may seem large to the beginner. Glycocoll is prepared by hydrolysis, thus linking up the chemistry of the proteins with that of simpler compounds. Limonene dihydrochloride has tremendous teaching value and the synthesis of camphor from pinene gives an opportunity for select work in an enticing field. The methods described give good yields in most cases, but the yield was not the prime reason for choosing any experiment.

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