II. Observations on the Comparative Anatomy of the Eye. By 

 ROBERT KNOX, M. D. Member of the Wernerian Society, 

 and of the Medical Chirurgical Society of Edinburgh. 



(Read June 17. 1823.; 



THE following observations, which I have the honour to pre- 

 sent to the Society, have arisen out of an inquiry into the struc- 

 ture and distribution of the nervous system throughout the ani- 

 mal creation. It will readily be imagined, that the nerves sup- 

 plied to the organs of sense, did not fail strongly to attract my 

 attention, and that those belonging to so important an organ as 

 the eye, were considered by me as worthy of the most minute 

 investigation. It was impossible to proceed in this inquiry with- 

 out submitting the organ itself to a very careful examination, in 

 executing which, several important facts presented themselves, 

 which I believed to be novel, or, at least, to lead to views respect- 

 ing the physiology of the eye, different from those generally 

 adopted. It became my duty to search into authors of the pre- 

 sent and of the past age, and to collect into view whatever had 

 been previously written on the subject ; but leisure being alto- 

 gether wanting for such an undertaking, I have thought it best 

 to describe what I have myself seen. 



