William Bingley, Useful Knowledge: Volume 2. Vegetables
“ Each of these kinds of nuts is much esteemed, but particularly the latter; the flavour of its kernels being very delicious. They are, however, difficult of digestion, and, when eaten in considerable quantity, sometimes produce very unpleasant effects. The oil which is obtained from hazel-nuts by pressure is little inferior in flavour to that of almonds, and, under the name of nut-oil, is often used by painters. Chemists employ it as the basis of fragrant oils artificially prepared, because it easily combines with and retains odours. This oil is found serviceable in obstinate coughs. ”
