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vallatse the orang agrees with man (Pocock, 

 Sonntag) . 



Fig. 68. Longitudinal Section of Lower Jaw of Monkey (A) 



AND IN Man (B), Showing Attachment of the Tongue Muscle 



TO the Back of the Jaw (after Robinson). 



C. Diagram of the genioglossus muscle in pronouncing the sound 

 "oo." D. Diagram of the genioglossus muscle in pronouncing the 

 letter "T." (C, D, after Robinson.) For details, see pp. xxviii, xxix. 



The muscles of the tongue are the same in the 



anthropoids and man (Figs. 67, 68) but in the latter 



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