author's abstract op this paper issued 

 by the bibliographic service, august 15 



A PHYSIOLOGICAL STUDY OF THE ANATOMY OF THE 



EYE AND ITS ACCESSORY PARTS OF THE 



ENGLISH SPARROW (PASSER 



DOMESTICUS) 



JAMfiS ROLLIN SLONAKER 



From Stanford University, California 



SEVENTY-FIVE FIGURES 



CONTENTS 



Introduction 351 



The eyeball 352 



The eyelids 355 



The lacrimal apparatus 364 



The extrinsic muscles of the eye 368 



The blood supply to the eye 372 



The nerve supply to the eye 381 



The lens 394 



The sclera 399 



The cornea 405 



The chorioid including the iris, ciliary processes, the ciliary muscles, accom- 

 modation, etc 406 



The pecten 415 



The retina 420 



Muscle and visual tests 430 



Literature cited 433 



INTRODUCTION 



The eye of the bird, owing to its keen power of sight, its great 

 range of accommodation, and its relatively large size, is an 

 especially interesting object to study. The purpose of this 

 paper is to bring together in as compact a form as possible: 

 1. A complete morphological description of the various parts of 

 the eye and its accessory structures. 2. The functions of these 

 parts. It is also intended to serve as a basis of comparison for 

 an extended study of the eyes of the birds of the world which 

 Dr. Casey A. Wood, of Chicago, and the author have under wa3^ 



351 



