The Technical World Magazine, Volume 20Technical World Company, 1912 |
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Page 41
... hundred trees a day . 41 first planted in seed beds , one hundred and fifty to two hundred and fifty seedlings being grown to the square foot . The plants are watered , and protected by slats which divide their daylight equally into ...
... hundred trees a day . 41 first planted in seed beds , one hundred and fifty to two hundred and fifty seedlings being grown to the square foot . The plants are watered , and protected by slats which divide their daylight equally into ...
Page 379
... HUNDRED - MILE " COASTER " WHAT is undoubtedly the most daring of railroad enterprises is the famous Oroya- Lima project in the Andes , in Peru . In a distance of one hundred and forty miles this line rises from sea - level to an ...
... HUNDRED - MILE " COASTER " WHAT is undoubtedly the most daring of railroad enterprises is the famous Oroya- Lima project in the Andes , in Peru . In a distance of one hundred and forty miles this line rises from sea - level to an ...
Page 883
... hundred miles . north of San Francisco , ris- ing in a wall four hundred feet high , with outcroppings on the surface , is a field of ore that yields seventy per cent of metallic iron . Ore containing but sixty per cent is today ...
... hundred miles . north of San Francisco , ris- ing in a wall four hundred feet high , with outcroppings on the surface , is a field of ore that yields seventy per cent of metallic iron . Ore containing but sixty per cent is today ...
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