Text Appearing Before Image: Photograph by Wheelui Reinforced Concrete Flume on Main Canal Near Mercedes Text Appearing After Image: Photograph by Wheelus, San Benito Irrigating Onions at Harlingen One op the Shallow Artesian Wells at Lubbock Medina Irrigation Co. DamEight-million-dollar system built by Pearson of the Pearson Syndicate TURNING THE WATERS 201 sions. In 1730, to cite a conspicuous and still-existingexample, the San Pedro ditch, now surrounded by San An-tonio houses, was dug. Numerous other acequias weredug at the other missions, but, of course, judged by modernstandards, no very great acreage was watered. The early American settlers in Texas, coming by way ofthe well-watered East, did not practise irrigation, and itwas not till 1869 at Del Rio, after the population had spreadthrough the eastern half of the state, that what may becalled modern irrigation began in Texas. Since 1870 therehas been a gradual development, accelerated by two rapidexpansions, one in rice irrigation and the other in the lowerRio Grande Valley. The abundance, nearness, and cheap-ness of fertile and fairly well-watered land and
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