THE MOUTH 



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Fig. 416. — Dissection of Mouth and Pharyngeal Region of Pig. 

 1, Hard palate; B, tongue showing distinctly fungiform papillae: J, foliate papilla; 4, lymph nodules of soft palate; 

 5, stylo-glossus muscle, out of which a portion has been cut; 6', hyo-glossus; 7, genio-glossus; 3, genio-hyoideus ; 9, 

 mylo-hyoideus (reflected); 10, stylo-hyoideus; 11, great cornu of hyoid bone; 13, tensor palati; 13, levator palati; 

 .?4. pterygo- et palato-pharyngeus; 1,5, sty lo-pharyngeus ; 16, cervico-hyoideus; 17, sterno- et omo-hyoideus; 18, su- 

 prapharyngeal lymph glands; a, bulla ossea; b, paramastoid process. (Ellenberger-Baum, Anat. d. Haustiere.) 



The average periods of eruption of the teeth are given in the subjoined table: 



Tooth Eruption Change 



Ii .... 2 to 4 weeks 12 months 



12 . . . . / upper 2 to 3 months 



\ lower 1 J 2 to 2 months 16 to 20 months 



13 .... Before birth 8 to 10 months 



C .... Before birth 9 to 10 months 



Pi .... 5 months 



P2 .... 5 to 7 weeks 



p / upper 4 to 8 days 



" ■ ■ ■ ■ \ lower 2 to 4 weeks I- 12 to 15 months 



p / upper 4 to 8 days 



^ ' ' ' ■ \ lower 2 to 4 weeks 



Ml .... 4 to 6 months 

 M2 .... 8 to 12 months 

 Ms 18 to 20 months 



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