It must, however, be remembered, as we have said before, that a man becomes socially active at about the age of puberty, and that his social activity will naturally take those channels customary in a given tribe. The fact that a youth enters a society like the Ruk-Ruk, to which most members of the tribe belong, should not excite wonder. As a matter of fact, we should find it necessary to explain why he did not join. His failure to become a member would most certainly be associated, in such a case, with a low social status. What is to be emphasized here is not the youth of the novices, but the intellectual development occurring at that age. This comes out clearly in the case of the Duk-Duk, where the parents generally purchase membership for their children immediately after birth. Young children behave like regularly initiated members, but they only become active members at the age of sixteen. Similarly in the Winnebago Medicine Dance individuals may be initiated in early childhood, but it is at a much later period that they possess the powers of adult members. As a matter of fact, admission depends upon so large a number of factors in different societies, that it would be possible to draw up a table that would include all ages from birth to old age. In the same way the initiation of a group of individuals at one time depends upon too large a number of factors to permit any single interpretation. The burden of proof rests with Schurtz to show that the presence of a specific test connects the Ruk-Ruk Society with puberty rites, and that the presence of a group initiation in the Duk-Duk connects that society with the men’s associations. Perhaps a few examples might bring out more clearly the different kinds of initiation. In the Ruk-Ruk Society the novices retire to the woods, work for their sponsors, lay out their plantations, etc. They are also supposed to converse with spirits.[31] Similar conditions are found in the Matambala Society of the Island of Florida.[32] This retirement to the woods and to a holy precinct, and consequent re-appearance, are characteristic of a large number of initiations. The work the novice performs for his sponsor must also be regarded as a characteristic of this area. The tests of the novice have been spoken of before. They are, as might be expected, of the most diverse kind. In Fiji, for instance, a ceremonial attack upon the novices occurs, which is said to symbolize their death.[33]