The human body : an account of its structure and activities and the conditions of its healthy working.

  • Martin, H. Newell (Henry Newell), 1848-1896.
Date:
1881
Catalogue details

Licence: Public Domain Mark

Credit: The human body : an account of its structure and activities and the conditions of its healthy working. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    PAGE Colorblindness. Fatigue of the retina and after-images. Con tvasts. Heriug's theory of vision. Visual perceptions. Single vision with two eyes 50(! CHAPTER XXXIII. THE EAR AND HEARING. The external ear. The tympanum. The auditory ossicles. The internal ear. The organ of Corti. The loudness, pitch, and timbre of sounds. Sympathetic resonance. Functions of tlie tympanic membrane, of the auditory ossicles, of the cochlea, and of the vestibule. Auditory perceptions 535 CHAPTER XXXIV. TOUCH, THE TEMPER.VTURE SENSE, THE MUSCULAR SENSE, COrMON SENSATION, SMELL, AND TASTE. Nerve-endings in the skin. The pressure sense. The localizing power of the skin. The temperature sense. Modality of skin sensations. The muscular sense. Pain. Hunger and thirst. Smell. Taste 556 CHAPTER XXXV THE FUNCTIONS OF THE BRAIN AND SPINAI, CORD. The special physiology of nerve-centres. The spinal cord as a centre. Reflex actions. The least-resistance hypothesis. The educafiou of the spinal cord. The inhibition of reflexes. Psy- chical activities of the cord. The cord as a conductor of nervous impulses. Functions of the brain in general. Func tions of medulla oblongata. Functions of cerebellum, pons Varolii, and mid-brain. Sensations of equilibrium and func- tions of semicircular canals. Functions of the fore-bram Hygiene of the brain 578 CHAPTER XXX^a. VOICE .\ N D SPEECH. Anatomy of larynx. The vocal cords. Causes of the varying pitch of the voice. Ran^e of the human voice. The produc- tion of vowels. Consonants 595