This is copied from the original nitrate photonegative; it does not give any indication whether this work has been published.
2.
With regards to light intensity, most earthworm species are photonegative to strong sources of light and photopositive to weak sources of light.
3.
The youthful self-portrait Martin creates is a photonegative impression of the all-American boy who was once the president of his high school class and a star athlete.
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