104 PROF, E. RAY LANKESTER ON THE [Feb. 5, 



yet that in the Giraffe the growing horn must spread from its 

 original position, and in fact take up a new position on the 

 parietal, with which he recognises that it is largely in contact 

 in adult life. 



Text-fi2'. 28.. 



X 



Text-fig. 29. 



}.\"p.OSS. 



i 



.J- 



^ X. s. y- 



Text-fig. 28. — Sagittal section through the bony tissue of the ossicone and the roof 

 of the skull of a very young Giraffe (same specimen as that drawn in text- 

 fig. 24). Drawn of the natural size. 



p.oss., the ossicone ; s., the parieto-frontal suture; x., the parietal bone; 

 y., the frontal bone. 



Text-fig. 29. — Copy of the drawing (natural size) of a sagittal section through the 

 ossicone and the roof of the skull of a newly-born Giraffe, published bj-^the late 

 Sir Richard Owen in the Trans. Zool. Soc. 1840. 



^.oss., the ossicone ; s., the parieto-frontal suture ; x., stated to be a " frontal " by 

 Owen but actually parietal; y., stated to be "parietal" bj'Owen but now shown 

 to be frontal. 



I felt considerable doubts as to the cori-ectness of this observa- 

 tion, and obtained through tlie kindness of Prof. Stewart some 



