646 Transactions of the American Institute. 



distinctly. This fluid is secreted with great rapidity. A man in 

 Amsterdam, 200 years ago, had great success in curing the blind. A 

 cataract is simply an opacity in the crystalline lens. By pricking 

 the eye, he allowed the fluid to escape, and its place was soon sup- 

 plied with a more transparent fluid. This man, not being a doctor, 

 was called upon to operate upon a dog, and thrown into prison with 

 the promise that when the dog could see again he should be released. 

 The next morning the lens had filled up with new fluid, and the dog 

 could see. 



Dr. J. "W. Richards remarked that people often become blind in 

 one eye, or deaf in one ear, without knowing it. 



Dr. L. Bradley — I apprehend that persons suffering from strabis- 

 mus, or cross-eyes, always see double. 



Dr. J. V. C. Smith — Cross-eyed people see with both eyes, but 

 much more strongly with one of them. In the case of the chameleon, 

 the two eyes are entirely independent of each other, and they seem 

 to distinctly apprehend two objects at the same time. I do not know 

 whether the mind can think of two things at once, but the chame- 

 leon seems to have that power. 



Dr. Van der Weyde — I think most birds see with one eye in one 

 direction, and with the other eye in the other direction. In pressing 

 upon the eye, at first we see double ; but if we continue the pressure 

 we cease to see double, and then removing the pressure again we see 

 double. People who have strabismus do not see double, for they see 

 with one eye. Strabismus can be cured, especially in children, with- 

 out any operation at all, by merely strengthening the weaker eye, 

 and accustoming it to look. Notice which eye is used, and cover that 

 eye, forcing the child to look with the other. On uncovering the eye, 

 for a time it will be found that the eyes will move together. By a 

 frequent repetition of this covering of the stronger eye, strabismus 

 can be completely cured. 



Dr. L. Bradley — It is not always the case in strabismus that one 

 eye is defective. Sometimes the person can look equally well with 

 the two eyes, and looks first with one, and then with the other. 



Dr. J. J. Edwards — Ordinarily we look with both eyes; or we 

 could not have stereoscopic views. 



Mr. J. K. Fisher — Artists learn to look at objects as a whole, and 

 not merely at the separate parts. 



The President — In playing a new piece of music, in eight parts, 

 the performer must read every note separately, and must do this in a 

 small fraction of a second. 



