Sentiments concerning nature with which philosophers were delighted

 Table of Contents

 Book I.

 It being our determination to discourse of Natural Philosophy, we judge it necessary, in the first place and chiefly, to divide the body of philosophy

 Chapter I.

 Chapter II.

 Chapter III.

 Chapter IV.

 Chapter V.

 Chapter VI.

 Chapter VII.

 Chapter VIII.

 Chapter IX.

 Chapter X.

 Chapter XI.

 Chapter XII.

 Chapter XIII.

 Chapter XIV.

 Chapter XV.

 Chapter XVI.

 Chapter XVII.

 Chapter XVIII.

 Chapter XIX.

 Chapter XX.

 Chapter XXI.

 Chapter XXII.

 Chapter XXIII.

 Chapter XXIV.

 Chapter XXV.

 Chapter XXVI.

 Chapter XXVII.

 Chapter XXVIII.

 Chapter XXIX.

 Chapter XXX.

 Book II.

 Having finished my dissertation concerning principles and elements and those things which chiefly appertain to them, I will turn my pen to discourse o

 Chapter I.

 Chapter II.

 Chapter III.

 Chapter IV.

 Chapter V.

 Chapter VI.

 Chapter VII.

 Chapter VIII.

 Chapter IX.

 Chapter X.

 Chapter XI.

 Chapter XII

 Chapter XIII.

 Chapter XIV.

 Chapter XV.

 Chapter XVI.

 Chapter XVII.

 Chapter XVIII.

 Chapter XIX.

 Chapter XX.

 Chapter XXI.

 Chapter XXII.

 Chapter XXIII.

 Chapter XXIV.

 Chapter XXV.

 Chapter XXVI.

 Chapter XXVII.

 Chapter XXVIII.

 Chapter XXIX.

 Chapter XXX.

 Chapter XXXI.

 Chapter XXXII.

 Book III.

 In my two precedent treatises having in due order taken a compendious view and given an account of the celestial bodies, and of the moon which stands

 Chapter I.

 Chapter II.

 Chapter III.

 Chapter IV.

 Chapter V.

 Chapter VI.

 Chapter VII.

 Chapter VIII.

 Chapter IX.

 Chapter X.

 Chapter XI.

 Chapter XII.

 Chapter XIII.

 Chapter XIV.

 Chapter XV.

 Chapter XVI.

 Chapter XVII.

 Chapter XVIII.

 Book IV.

 Having taken a survey of the general parts of the world, I will take a view of the particular members of it.

 Chapter I.

 Chapter II.

 Chapter III.

 Chapter IV.

 Chapter V.

 Chapter VI.

 Chapter VII.

 Chapter VIII.

 Chapter IX.

 Chapter X.

 Chapter XI.

 Chapter XII.

 Chapter XIII.

 Chapter XIV.

 Chapter XV.

 Chapter XVI.

 Chapter XVII.

 Chapter XVIII.

 Chapter XIX.

 Chapter XX.

 Chapter XXI.

 Chapter XXII.

 Chapter XXIII.

 Book V

 Chapter I.

 Chapter II.

 Chapter III.

 Chapter IV.

 Chapter V.

 Chapter VI.

 Chapter VII.

 Chapter VIII.

 Chapter IX.

 Chapter X.

 Chapter XI.

 Chapter XII.

 Chapter XIII.

 Chapter XIV.

 Chapter XV.

 Chapter XVI.

 Chapter XVII.

 Chapter XVIII

 Chapter XIX.

 Chapter XX.

 Chapter XXI.

 Chapter XXII.

 Chapter XXIII.

 Chapter XXIV.

 Chapter XXV.

 Chapter XXVI.

 Chapter XXVII

 Chapter XXVIII.

 Chapter XXIX

 Chapter XXX.

Chapter XVI.

Of Hearing.

Empedocles says that hearing is formed by the insidency of the air upon the cochlea, which it is said hangs within the ear as a bell, and is beat upon by the air. Alcmaeon, that the vacuity that is within the ear makes us to have the sense of hearing, for the air forcing a vacuum gives the sound; every inanity affords a ringing. Diogenes the air which exists in the head, being struck upon by the voice gives the hearing. Plato and his followers, the air which exists in the head being struck upon, is reflected to the principal part of the soul, and this causeth the sense of hearing.