[Study of the effect of luminal and benzedrine on the thio-amino acids (methionine, cysteine, cystine), cyclic and heterocyclic amino acids (tyrosine, tryptophan and histidine), nucleic acids (ribo- and desoxyribonucleic acid), proteases (trypsin, cathepsin, dipeptidase and carboxypeptidase) and nucleases (ribo- and desoxyribo-nuclease) of the cerebral cortex of rats].