Taste depends on the impact of the atoms given off by a substance on certain specially sensitive organs in our bodies. If the atoms of a substance can’t move about freely, we can’t taste it. That’s why we can only taste things that are in a state of solution.

Animals that live in water have taste buds all over their bodies. For instance, fish can taste with their tail fins! Animals that live on land have their taste buds concentrated in their mouths, and in man they exist only on the tongue.