id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
20653	Gregory, Mary Huston	Checking the Waste: A Study in Conservation			.txt	text/plain	72672	3384	74	we need, leave as little waste in the mine as possible, and shall use of tons of coal in doing the work that water-power would do better. air every day to light all the large cities in the United States. plants in large quantities, and are taken from the soil far more rapidly In considering the best trees for planting we come to the last great use which are wasted each year were planted, the general food supply would state forests are receiving two dollars and thirty cents per acre a year question,--have we available water-power to conserve our coal supply? the present conditions of use, waste, and increase to continue, the coal great electric power-houses at the coal mines to use the culm, the heat-units of coal, gas-producer engines use fifty per cent. last few years, and each makes possible new uses for iron requiring taken from the waters of the United States every year.	./cache/20653.txt	./txt/20653.txt