Abstract
Preparations of amylase inhibited forma-tion of lactic acid in muscle; this inhibition was probably due to the formation of a compound between amylase and the starch whereby the latter was rendered inaccessible to the muscle enzymes. Muscle amylase did not seem to exert this action. This was deduced from the fact that the glycogenolytic action of muscle amylase would produce a trisaccharide which would inhibit the action of myozymase; the formation of lactic acid, how-ever, was indication that such muscle amylase action did not occur.