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Show 216 DR. H. GADOW ON THE EVOLUTION [Mar. 18, These stages are repeated by every young Cervine male. A portion of the integument is frayed off, at first perhaps accidentally, then repeatedly during the annual rutting-time, and a Text-fig. 25. Frontal Bone in Cartilage .'Cartilage $ later on bone, ie Os Cornu = Evolution of Horns and Antlers. : Frontut bone I. Protoceras. II. Young Stag, with velvet. II a. Sivatherium. lib. Giraffe. H e . Okapi. IIP. Antilocapra, adult; early stage. ," xl » ; later stage, when the prong begins to grow. IV. Domestic Calf. rhythm of regeneration is established. The re^enerati™ ™ f n concerns chiefly the additional c h o n d r o - o s ^ o n ^ S f ^ ^ being the distal and therefore more Z £ $ £ f i £ ? * * |