The rite of investiture, called, in the colloquially technical language of the order, the ceremony of clothing, brings us at once to the consideration of that well-known symbol of Freemasonry, the LAMB-SKIN APRON. This rite of investiture, or the placing upon the aspirant some garment, as an indication of his appropriate preparation for the ceremonies in which he was about to engage, prevailed in all the ancient initiations.