Ives, Frederic Eugene, 1856-1937 author · Philadelphia : Printed by the author · leaf 24
A NEW PRINCIPLE IN HELIOCHROMY. 5 the sets of nerve fibrils in the eye. Such a diagram is here shown : CD E F & RED … Fig. 1.— Curves of Normal Eye. (MazwelL) It is evident that a process which will produce neg- atives exactly representing the intensity of action of any part of the spectrum upon a set of nerve fibrils in the eye by a corresponding degree of opacity of deposit on that part, will produce negatives…
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