William Thompson, The Natural History of Ireland… (1856)
“ From many experiments he brought the operationto such perfection, that for some years he never missed a whale, nor failed of holding her by the harpoon : he had for some time ill success, from firing when too near, for the harpoon does not then fly true, but at 14 or 15 yards' distance, which is what he would choose, it flies straight; has killed several at 25 yards. ”
