The elements of natural philosophy : copiously illustrated by familiar experiments and containing descriptions of instruments, with directions for using : designed for the use of schools and academies (1856)
Sprague, A. W. (Alfred White), 1821-1891 · Boston : Phillips, Sampson & Company · leaf 321
ina, there forming an image or exactrepresentation of the various objects perceived by the mind.Fig. 248 presents an enlarged sectional view of the differentparts which compose the human eye. The outside covering, S S S S, is the scleroticcoat^ a tough white mem-brane commonly known asthe IVhite of… … What is said of the Eye, and what does it convey to the mind ? What issaid of it as an optical instrument ? Where is it placed ? Of what does itconsist ? What is the retina ? What is the sclerotic coat, and how situated ? 316 STRUCTURE OF THE EYE. the cor7iea^ and incloses on one side a small…
Physics
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