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 10 · column 5 of 7 · from the scan, no model involved
Gases formed by agriculture products can be dangerous to fanners.
Four gases create common hazards—hydrogen sulphide, ammonia, carbon dioxide and methane, said Glen H. Hetzel, Virginia Tech Extension agricultural engineer.
Hydrogen sulphide can be produced in manure pits or any place where organic material is decaying. As
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