It seems in the highest degree improbable, if not impossible, that so excellent a drawing as this should have been cut on the cylindrical piece of antler by an engraver who never saw the flat or rolled-off impress of his design. One is driven to the conclusion that he must, as he worked on the bone, have taken an impress of the growing picture from time to time, using probably animal fat and charcoal as an "ink" and printing on to a piece of prepared skin or on to a birch-bark cloth. How otherwise could he have made his engraving so truly that when, ages afterwards, we print it off the cylinder, we are astonished and delighted by its perfection of design and execution? If this be once admitted–namely, that the artist tested and checked his work by printing it off as he proceeded with it–we gain what appears to me to be the probable solution of the question which has been largely debated, "For what were these carved cylinders or rods used?" Those which are simple cylindrical rods, such as the present one, must be distinguished from others which have one or more circular holes bored in them and others which are curiously bent at an angle. Such specimens are often carved with small unimportant ornament, not requiring development or printing. They as well as the present class have been spoken of as "wands of authority" and "sceptres"; some are considered to be arrow straighteners; others have been supposed to be "divining rods" or "rods of witchcraft"; whilst one of those discovered by M. Piette (others similar to it are known) has been regarded as a "lance thrower" or "propulsor" (such as modern primitive races use), having a notch at one end upon which the lance to be thrown is made to rest. The latest suggestion as to these notch-and-hook-bearing rods, is that they are large crochet hooks used in making nets. It has also been suggested that some of these carved rods were used as "fasteners" of the skins used as clothing.