A super-imposed photograph of the deceased over the skeleton of a human body to prove that the skeleton was of the deceased is relevant under.

9. Facts necessary to explain or introduce relevant facts. –– Facts necessary to explain or introduce a fact in issue or relevant fact, or which support or rebut an inference suggested by a fact in issue or relevant fact, or which establish the identity of any thing or person whose identity is relevant, or fix the time or place at which any fact in issue or relevant fact happened, or which show the relation of parties by whom any such fact was transacted, are relevant in so far as they are necessary for that purpose. It establishes the identity of a person whose identity is relevant