Abstract
The sucrose, raffinose and inulin spaces within the gastrocnemius of the female rat have been estimated at 12.0[plus or minus]2.2%, 10.7[plus or minus]0.6% and 10.0[plus or minus]0.3% respectively, expressed as a percentage of the total muscle volume. The mucopolysaccharide and hexosamine contents of the gastrocnemius have been found to be inversely dependent upon the weight of the muscle. The possibility that a relation exists between the saccharide spaces and the muscle mucopolysaccharide content has been discussed in terms of saccharide molecular radii.