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Dear Sir:We recently developed methods for tanning shearlings (sheepskins with the wool still on) with glutaraldehyde for producing improved hospital bed pads [3]. The golden-yellow color of the wool and analyses of the solutions before and after reaction with glutaraldehyde indicated a significant amount of glutaraldehyde fixation by the keratin [3]. This letter reports quantitative details of this reaction and chemical and physical properties of the glutaraldehyde-stabilized wool.Experimental . The wool for these studies was removed from a scoured, depickled shearling by applying a lime-sodium sulfi

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A SYNTHESIS OF METHIONINE 2575[o]2d 96.6 in water (0.244 g. of substance in 25 cc. of chloroform solution rotated 1.73 to the right in a 2-dm. tube). Successive recrystallizations gave the values 97.1, 96.8 and 96.7 and the value 96.8 is accepted for pure alpha-methylcellobioside. The pure substance melts at 144-145°, tastes faintly sweet and does not reduce Fehling's solution.The crystals which had been dried in a desiccator at room temperature did not lose weight appreciably when kept at 110 °in vacuo for four hours.

S‐methyl isothiourea sulfate S‐methyl isothiourea sulfate