Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 509
these nerve-fibres have been traced, and have been found to form junctions with thosebranching from the ganglionic cells. Of the part played by each of these delicate structures in exciting visualimpressions little is yet known. How light, or the pulsations of ether, ifsuch there be, is ultimately… … Fig. 236. may ultimately be distinguished. One curious result of modern investiga-tion is that light falling directly upon fibres of the optic nerve is quiteincapable of exciting a7jy sejtsation ivhatever. Light has no more eftect onthis nerve and its fibres than it would have on any other nerve of…
Inventions
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