Annual report of the Regents . H. Ries photo. Circular down draft kiln, J. Lyth & Sons, Angola. Plate 98 To face page 7G8. Circular down draft kiln for burning sewer pipe and drain tiles. J. Lyth & Sons,Angola. a> CO d O O H Oi05 +-> d 1—1

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Keywords: ., bookauthorne, bookcentury1800, bookdecade1880, booksubjectscience