Note respecting the Eyes of Amblyopais spt ' • j. l.M 



were really the eyes, was proved by a careful micros 

 amination. 



The specimen in which the eyes were visible externally had 

 been preserved in a fluid called whiskey ; it was much Bbrivi 

 and of a yellowish hue. In another specimen which I bad 

 brought from the Mammoth Cave, preserved in alcohol, the eye 

 dots were not visible externally. This fact was nol stated in my 

 article on the blind fish (M tiller's Archiv, 184 1. p. 887, Berlin), 

 because no artificial means had been used on my part to render 

 the skin and the cellular tissue transparent, and also probably 

 because at that time, when the Amlil.xp. whs considered • 

 and was called accordingly the eyeless fish, the questions which 

 engaged my attention particularly, were, whether this fish had 

 eyes or not, and after they were discovered, what was the dej 

 of their development. 



The question why the skin of one of the specimens exaraii 

 by me at that time was transparent to a certain degree, was, for 

 the reasons above stated, neither asked nor answered; but to 

 this question there can be but one answer, viz., that the Quid 

 in which one of the specimens had been preserved (the constitu- 

 ent parts of which are unknown) had rendered the skin suffi- 

 ciently translucent to cause the eyes to be visible externally. 



Having made this explanation, which I deem proper under the 

 circumstances, I proceed to correct some of the statemi 

 quoted, reported to have been made by Prof. Wyman, nan, 

 "They (meaning Miiller and myself) found do tran 

 media." That this statement is incorrect i from th 



parison made by J. Miiller of the rudimentary 

 Amblyopia vpelceua with theeyesof the inv 

 which have transparent media; but as no h 

 tion was made, no details were given. The membran< 

 sufficiently examined, however, to warrant ; A 



fact of special interest, that the eye had no 

 No lens has since been found by Other i 

 statement, that we found no nerve, ue lly be 



