6. Back view of the larynx with muscles

7. Diagram to illustrate movements of cartilages in breathing and phonation

8. Section through larynx and windpipe, showing muscles and vocal cords

9. The laryngoscope and its use

10. The glottis in breathing, whispering, and vocalisation

11. The vocal cords in singing, after French

12. Vertical section through the head and neck to show the larynx and
resonator

13. Diagram (after Aikin) of the resonator in the production of the vowel
sounds

14. König's flame manometer

15. Diagram of a neurone

16. Left hemisphere, showing cerebral localisation

17. Diagram to illustrate cerebral mechanism of speech, after Bastian

18. The course of innervation currents in phonation