X LIST OF THE WOODCUTS. 



Figure?. Page 



27. A Lateral View of the same . . . . . 333 



28. A Vertical Section of the Larynx to show its internal Surface 333 



29. Bird's eye View of the Larynx . . . . 335 



30. A Diagram of the Ear ..... 346 



31. A Longitudinal Section of the Giobc of the Eye . . 363 



32. Diagram explanatory of the Mechanism of Vision . 365 



33. Diagram explanatory of Sturm's hypothesis of Vision at differ- 



ent distances ...... 373 



34. Front view of Wheatstone's Stereoscope . . . 382 



35. Plan of Wheatstone's Stereoscope .... 382 



36. Figures as seen in the Stereoscope . . . 383, 



