Smithsonian Report, 1914.—Robinson. PEATE tte 
72. Diagram of the genio-glossus muscle 73. Diagram of the genio-glossus muscle 
at rest. in pronouncing the sound “Oo. 
| 
74. Diagram of the genio-glossus muscle in 
pronouncing the letter ‘‘ kK.” 
75. Diagram of the genio-glossus muscle 76. Diagram of the genio-glossus muscle 
in pronouncing the letter ‘‘ T.”’ in pronouncing the sound ‘ Ah.” 
