CONTENTS OF PART IV. 



BOOK III. (continued). 



CHAPTER III. 

 SIGHT. 



SECTION I. 



ERRATUM. 



p. 1492, 1. 15, and elsewhere for ' Graaffian ' read ' Graafian.' 



707. The retinal image in relation to the sensations excited by it . . 1150 



SECTION II. 



THE FACTS OF ACCOMMODATION. 



708. The eye can accommodate for far and near objects ; far and near 



limits of accommodation 1151 



709. Scheiner's experiment 1152 



710. Emmetropic, myopic, hypermetropic and presbyopic eyes . . 1154 



711. The changes observed in the eye during accommodation . . . 1155 



F. b 



