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234337

Having thus fully described our invention, what we claim as new and desire to secure by Letters Patent is:

1. A method for obtaining a potent substance from the ductless portion of pancreatic or related glands in concentrated form and sufficiently free from impurities for repeated administration to patients having the hereindescribed physiological characteristics which consists of extracting said substance from the gland with a solvent and concentrating it with a reagent which will unite with it as by adsorption.

2. A method for obtaining a potent substance from the ductless portion of pancreatic or related glands in concentrated form and sufficiently free from impurities for repeated administration to patients having the hereindescribed physiological characteristics which consists of extracting said substance from the gland with a solvent, concentrating it with a reagent which will unite with it as by adsorption, and separating said substance and reagent.

3. A method for obtaining a potent substance from the ductless portion of pancreatic or related glands in concentrated form and sufficiently free from impurities for repeated administration to patients having hereindescribed physiological characteristics which consists of extracting said substance from the gland with a solvent, concentrating it with a reagent which will unite with it as by adsorption, and making a sterile aqueous solution of the substance.

4. A method for obtaining a potent substance from the ductless portion of pancreatic or related glands in