Abstract
Chondroitinsulfuric acid can be estimated quantitatively in such a small quantity of cartilage as 5 mgm. of the dry powder by means of the Zuckerkandl-Messiner-Klebermass method.
The writer is indebted to Professor K. Kodama for criticisms, to Dr. I. Kubo, Professor of Otorhinolaryngology for continuous encouragement, and to Assistant Professor H. Masamune for kind direction in the course of this work. The writer acknowledges gratefully also the kindness of Dr. M. Moriyama in the analysis of glucuronic acid.
