•lUO Harris Hawthorne Wilder 



mark off the quadrants of the e3'ebal], are not quite normal, but as these 

 are the very muscles which are positivelj^ identified by their innervation 

 there can be no mistake, and it is rather to be assumed that the eyeball 

 components have suffered some slight dislocation, as, for example, a 

 rotation outward over 30-40°. 



The examination of the interior of the eyeball shows that it is much 

 less double than one would expect from the arrangement of the muscles. 

 There is a single pupil, a single iris and a single lens, each slightly 

 broader than long. The eyeball itself measures 15 mm. in height and 

 20 mm. in lateral width. The proportions of the iris and the other 

 associated parts are also similar. 



Case 2. (Teras 77.) This monster is No. 6956 of the Wistar Insti- 

 tute Collection, and is a typical human Cyclops, identical in general 

 appearance with the specimen photographed by Hirst and Piersol, Vol. 

 Ill, Plate XXI. In the muscular parts the eye components seem nearer 

 together, and hence more reduced, than in the preceding ease, but in the 

 eyeball itself this specimen is decidedly more double. The palpebral 

 opening is evident and oval in shape. At the exact center of the lower 

 margin there is a single median caruncula, with a punctum lacrimale 

 upon either side of it, one for each lower lid component. 



Corresponding to the shape of the palpebral opening the eyeball is a 

 flattened piriform organ. The relationships and position of irides and 

 pupils could not be made out, but they seem to have been turned up- 

 wards, so that the optical axes would strike above the palpebral opening. 

 Within, the eyeball is incompeletely divided into two compartments by 

 a median partition that reaches from the front wall half way back. 

 Each compartment is furnished with a well-developed lens, but that of 

 the right side is slightly smaller than the other and not quite perfect 

 in shape. Back of the lens each compartment is nearly filled with a large 

 mass of firm connective tissue, of almost the consistency of cartilage, 

 which bears the lens in an anterior cup-shaped depression. This is 

 undoubtedly the vitreous humor, which, owing to the unnatural relation- 

 ships occasioned by the narrowed space, has formed another type of 

 connective tissue instead of the usual one. In view of the close relation- 

 ship of the various forms of connective tissue to one another, and the 

 ease with which one form may be transformed into another, this would 

 seem to be a modification easily explained. 



There are several well-developed eye muscles, which exhibit a perfect 

 bilaterality, but as I did not wish to mutilate the specimen sufficiently 



