Show DO 00 NOT BURN THE LEAVES they rhey are arc natures Na turea own As A such shoud be turned over to the soil fools burn leaves leaving leading tor for themselves a pinch of poor ash but sending back into the air what was taken from it by the process ot of growth says the out outing ing magazine these thousands of tons aro ara not made mada out of the earth but out of tho the air and aro arc intended to bo turned over labo into soil boll it if you plant ft a tree in a tub of dirt and leave it there until it one hundred pounds you will and by weighing tho the dirt that the tha treo tree was waa not made up of what was vas in the tub but almost altogether of what it could got git from the air carbon and nitrogen tor for the tha roost most part with hydrogen com competing poling a good share of the liquid part of sap cap the elements of the soil that are not in the air are deep down under the surface of th the violl idoll or incorporated in tho rocks the roost most important are potash from ashes weed waste soap buds cuds anti anil there are a tow few soils that in their natural state aro are entirely do da la in this ihla element the timber soils bolls of our corn belt contain about two thousand pounds of phosphorus per nere cere calsing crops that use up tip these elements steadily lessens tile the possibility of growing any crops at all we lave have got to find them in the sol soil if wo we uso use thorn up wo we have got to replace thom them Aul agriculture culture should be renamed aerl culture because we are really taking from the air the larger part of our annual crops what wo must know Is how to do this ahta most moat readily ow fathers knew that they roust must uso roa ma nitro and they knew that they roust rotate crops they knew also that living plants ted fed on decaying plants this having baying first served da as food for animals |