. Economic entomology . Leaf of lime-tree bearing nail-ffalls (work of a mite). Section of nail-gall of lime leaf. there has been a living creature there at all. The first step towards a knowledge of them was made nearly a hundred and €fty years ago, by Reaumur, the celebrated French entomologist. There sometimes occurs on the leaf of the Hme-tree a number of upright projecting small growths, varying from green through red to brown in colour, and which look very much as if a

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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondonchapmanandha