Abstract
We estimated the total Bial-positive substance in the cerebrospinal fluid in various mental and nervous disorders following the Bogoch's method. Our results showed disagreement with Bogoch's conclusion. Namely, no tendency of a low level appeared in the schizophrenic subjects as compared with that in our control group or in the other mental and nervous disorders. No characteristic relation could be established between the total Bial-positive substance and the total protein or the protein-bound sialic acid in the cerebrospinal fluid either.