The Biochemistry of Natural PigmentsIn the natural world colour is obvious and its importance in advertising the presence of flowers to pollinators and in camouflage is well known. In most cases the property of colour is due to the presence in the tissues of natural pigments. But these pigments are of much greater importance than merely to give colour, e. g. the fundamental light harvesting molecules of photosynthesis, the light detecting molecules of vision and haemoglobin in the