Block · one region of the page, as the scanner read it. It may hold a whole story, part of one, several, or an advertisement; stitching blocks into articles is the next step. Text is supplied OCR.
Page 11 · column 2 of 6 · from the scan, no model involved
A snake darts its tongue in and out because the tongue tells it when food is near. The forked tongue picks up airborne particles and carries them to a chemical analyzer in the rear of its mouth, according to the National Geographic Society book, “The Marvels of Animal Behavior.”
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