. Elementary agriculture with practical arithmetic . CANADA THISTLES, TPIE WORST OP WEEDS. ''noxious" weeds, Canada thistle, ox-eye daisy, couch grass, sorrel and common dock. As soon as any of the above make their appearance on the farm, the farmer should dig them up and burn them. If they are allowed to spread they will soon have possession of the farm. The writer has seen whole plantations,

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectagriculture, bookyear