Dear, tender-hearted reader, I did not, I _could_ not, unmoved, contemplate this sight at first; nor for a very long while could I bring myself to watch a living creature being drawn into that living trap. Nor could we—you and I—feel aught but horror in visiting a slaughter-house and watching a poor calf slowly die. Nor could we, for pleasure merely, look coolly on at a painful surgical operation. Yet we know that such things must be. The life of the snake is as important as that of the frog. If we are to talk about cruelty, this book of natural history, and of intended—let me say, of hoped-for—usefulness, would become one of political economy instead. We might discuss the sport of the angler, the huntsman; the affairs of the War Office; of railroad managers and of road-makers; the matters of the Society for the Prevention of Cruelty to Animals; followed by an examination into the questions that have been ventilated in so-called ‘benevolent organs;’ and how some of them employ writers who in every tenth line betray their ignorance of the creatures they attempt to describe. Not even theology could be dispensed with in this work; for, since the time when Adam was told to have ‘dominion over the fish of the sea, and over the fowl of the air, and over every living thing that moveth upon the earth,’ the question of ‘cruelty’ has never been satisfactorily solved. Morally and broadly, let us understand it to mean _unnecessary_ torture—pain and suffering that can be _avoided_, and which offers a very wide scope indeed. In the animal world, ‘every creature is destined to be the food of some other creature;’ and by these economies only is the balance of nature maintained. Happily we are spared the too vivid realization of the destruction of life ceaselessly going on throughout creation; the myriads of insects destroyed each moment by birds, the sufferings inflicted by the feline families and by birds of prey, the countless shoals of the smaller fish devoured—swallowed _alive_ too!—by larger ones, or caught (and not too tenderly) for our own use. These things we dismiss from our minds, and accept as inevitable. We do not ventilate them in daily journals. Nor do we take our children to the slaughter-house or the surgery for their entertainment; or repair thither ourselves for the sake of minutely discussing afterwards the sufferings we have witnessed. You will, I hope, discover that the pain inflicted by the constrictor or the viper is not, after all, so acute as it is by some imagined to be. The venomous bite of the latter causes almost immediate insensibility; the frog which the ring snake ate probably died of suffocation, which also produces insensibility; the constriction of the boa—in its natural condition—produces also a speedy death. Besides, as Dr. Andrew Wilson, in a paper on this subject, has explained to us, the sufferings of a frog or a rat are not like _our_ sufferings. Their brain and nerves are of a lower order.[2]