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 9 · column 2 of 5 · from the scan, no model involved
fly backwards.
To power all that wing activity, the hummers have very large hearts that beat an amazing 1,260 beats per minute, compared to our own heart that beats about 70 — 90 per minute. Their heart is so large it makes up one quarter of their total body weight. They
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