THE nature and amounts of free amino-acids in higher plants are becoming relatively well known since the advent of paper chromatography. However, few investigations of amino-acids in the Cryptogams have been made. Fowden1 has studied the amino-acids of certain algae, Mansford and Raper2 those of Mucor mucedo, Fluck and Richle3 those of Fusarium lycopersici. The yeasts, Aspergillus, Penicillium and Neurospora species4, have been extensively studied but the rest of the fungi remain largely unexamined.