and a myth is told to account for the mutual aversion of the walrus and the reindeer. And in general the Esquimaux say that Sedna dislikes the reindeer, wherefore they may not bring the beast into contact with her favourites, the sea-mammals. Hence the meat of the whale and the seal, as well as of the walrus, may not be eaten on the same day with venison. It is not permitted that both sorts of meat lie on the floor of the hut or behind the lamps at the same time. If a man who has eaten venison in the morning happens to enter a hut in which seal meat is being cooked, he is allowed to eat venison on the bed, but it must be wrapped up before it is carried into the hut, and he must take care to keep clear of the floor. Before they change from one food to the other the Esquimaux must wash themselves. (M129) But even among the sea-beasts themselves there are rules of mutual avoidance which these central Esquimaux must observe. Thus a person who has been eating or hunting walrus must strip naked or change his clothes before he eats seal; otherwise the transgression will become fastened to the soul of the walrus in a manner which will be explained presently. Again, the soul of a salmon is very powerful, and its body may not be eaten on the same day with walrus or venison. Salmon may not be cooked in a pot that has been used to boil any other kind of meat; and it must always be cooked at some distance from the hut. The salmon-fisher is not allowed to wear boots that have been used in hunting walrus; and no work may be done on boot-legs till the first salmon has been caught and put on a boot-leg. Once more the soul of the grim polar bear is offended if the taboos which concern him are not observed. His soul tarries for three days near the spot where it left his body, and during these days the Esquimaux are particularly careful to conform rigidly to the laws of taboo, because they believe that punishment overtakes the transgressor who sins against the soul of a bear far more speedily than him who sins against the souls of the sea-beasts.(677) (M130) The native explanation of the taboos thus enjoined on hunters among the central Esquimaux has been given us by the eminent American ethnologist Dr. Franz Boas. As it sets what may be called the spiritual basis of taboo in the clearest light, it deserves to be studied with attention.