AN INDICATOR METHOD OF MEASURING THE CONSUMPTION OF OXYGEN.
The blood of the horseshoe crab (Limulus) absorbs oxygen and turns blue when shaken in air. In the presence of certain organisms which consume oxygen it is quickly decolorized. By measuring the time required for the change of color the rate of consumption of oxygen may be determined.
Osterhout
W J
WJ
Laboratory of Plant Physiology, Harvard University, Cambridge.