Demonstrations of diseases in the chest : and their physical diagnosis / by Horace Dobell.

  • Dobell, Horace, 1828-1917.
Date:
1858
Catalogue details

Licence: Public Domain Mark

Credit: Demonstrations of diseases in the chest : and their physical diagnosis / by Horace Dobell. Source: Wellcome Collection.

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    CONTENTS. CHAPTER I. Simplicity of the practice of Auscultation and Percussion—Examples of its application by labourers and artizans—The difficulties of the medical student compared with those of the artizan—Object of the arrangement of the Plates — Acoustics—Correlation of motion, time, number, and the properties of matter—Density— Elasticity—Vibration—Sonorous vibration—Sensibility of the ear to appreciate tlie rate of vibration—Waves of condensation and rarefaction—Impressions on the retina and on the auditory nerve —Experiments, illustrating the distinction between musical and munusical sounds—Propositions 1 to 4 . CHAPTER II. Some medium essential to the manifestation of sound—Conditions under which the impact of matter produces sound—Examples— Conduction of sound—Conditions influencing this—Density— Homogeneity—Velocity—Phases of Vibration—Interference— Examples—Superposition of small sonorous Vibrations—Exam- pies—Reflection from plane and curved surfaces—Examples— Reciprocation, unison-resonance, consonance, echo—Table of comparison by Walshe—Examples—Skoda's theory of conso- nance—Metallic-tinkling—Gutta cadens—Amphoric echo—Pro- positions 5 to 10 . . . . . 10 25 CHAPTER III. Substantive distinctions between individual sounds, simple and com- pound—Musical and unmusical sounds—Duration, intensity, volume, rhythm—Dr. S, Alison's observations—Adjective dis- PAGE 1—9