r. S. G. AM) C. SURrEV. 



PREHISTORIC rRErlllNINCy I't. II. 



Cranium from the cavern of L'Hommo-Mort (La Luzoru) . Surgical trcphiuiu;; baa been performed npon the sagit- 

 tal snlure. Two-thirds natural size. (Prunifirea.) 



