user: pass:

Thomas, H.L., 1801. An anatomical description of a male rhinoceros. Philosophical Transactions of the Royal Society of London 91 (1): 145-152, pl. 10

Location: World
Subject: Anatomy - Head
Species: Indian Rhino

Original text on this topic:
I conclude however that if we should ever become acquainted with the natural habits of this animal, his vision will be found to be as perfect as that of any other of the same class. In the muscles, I have already remarked, that there is no difference; of course, the eye-ball, with those powers, must enjoy the common motions. In the easy and natural state of the eye, it is probably so adjusted tas to view with perspicuity very near objects, requiring some change to adapt it for distinguishing distant ones. This change, most likely, is effected by the four processes acting conjointly: at their termination they completely encircle the eye at its broadest diameter, therefore, upon their contracting, the axis of vision will be shortened, and the retina brought nearer to the crystalline lens. (It sees better in the distance).

[ Home ][ Literature ][ Rhino Images ][ Rhino Forums ][ Rhino Species ][ Links ][ About V2.0]