WHAT makes the lavender leaf so sweet?  It is all covered with delicate hairs, which give it a peculiar, bloom-like appearance. These little hairs grow" into an upright stem, and then throw out branches in every direction. Between two upright stems, and hiding away under their branches, as if for shelter, may be seen a little reservoir, containing the perfume. These may be found all over the leaf, but they are most numerous on the underside. When you crush a leaf with your hand, you break a perfume cell; that is why it is more fragrant than when you handle it carefully. If you want to see these tree hairs, and tiny perfume bottles, you must look through a good microscope.