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shallower waters near coasts, but even in the greater depths of all oceans, animal life is exceedingly abundant. A trawling in a depth of over a mile yielded two hundred specimens of animals belonging to seventy-nine species and fifty-five genera. A trawling in a depth of about three miles yielded over fifty specimens belonging to twenty-seven species and twenty-five genera. Even in depths of four miles fishes and animals belonging to all the chief invertebrate groups have been procured, and in a sample of ooze from nearly five miles and a quarter there was evidence to the naturalists of the Challenger that living creatures could exist at that depth.

Recent oceanographic researches have also established beyond doubt that while in great depths the water is not subjected to the influence of superficial movements like waves, tides, and swift currents, there is an extremely slow movement, in striking contrast with the agitation of the surface water. Although the movement at the bottom is so slow that the ordinary means of measuring currents can not be applied accurately to them, the thermometer furnishes an indirect means of ascertaining their existence. Water is a very bad conductor of heat, and consequently a body of water at a given temperature passing into a region where the temperature conditions are different retains for a long time, and without much change, its original temperature. To illustrate: The bottom temperature near Fernando do Noronha, almost under the equator, is 0.2° C., or close upon the freezing point; it is obvious that this temperature was not acquired at the equator, where the mean annual temperature of the surface layer of the water is 21° C., and the mean normal temperature of the crust of the earth not lower than 8° C. The water must therefore have come from a place where the conditions were such as to give it a freezing temperature; and not only must it have come from such a place, but the supply must be continually renewed, however slowly, for otherwise its temperature would gradually rise by conduction and mixture. Across the whole of the North Atlantic the bottom temperature is considerably higher, so that the cold water can not be coming from that direction; on the other hand, we can trace a band of water at a like temperature at nearly the same depth continuously to the Antarctic Sea, where the conditions are normally such as to impart to it this low temperature. There seems, therefore, to be no doubt that there is a current from the antarctic to the equator along the bottom of the South Atlantic.

From the millions of reliable deep-sea soundings that have been made during the last forty years the more general features of the bathymetric chart of the world have been firmly established; and the ancient idea, derived chiefly from a supposed

physical relation, that the depths of the sea are about equal to the heights of the mountains, has given place to exact notions as to the depths as well as the heights.

The greatest known depths that have been reliably sounded in the different oceans are given in the following list:

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THE main object of every society for the prevention of cruelty to animals I take to be the establishment of right feelings toward our speechless fellow-creatures. But feeling, to be correct, strong, and abiding, must be based on sound conceptions of the nature of that toward which it is exercised. So long as any individual believes that another wishes to injure him, so long will he find it most difficult to entertain kindly feelings toward the man that he deems his enemy; but let it appear that he has entirely misunderstood the motive and actions of the individual in question that instead of an enemy he proves to be a friend-and the whole current of feeling is changed. Thus would it be, in my opinion, with thousands of people if they could be made to see animals in their true light.

Glancing at historical and national views of animal life, we find at all periods widely different conceptions, and consequently

* An Address before the American Humane Association, Philadelphia, October 27, 1892.

feelings, in regard to some of our domestic animals. A certain animal regarded as a fit subject for contempt by some peoples has been an object of worship, or something akin to it, by others; hence it is not surprising that the lot of such animals has been very different in some parts of the world as compared with others. To illustrate this we need go no further than the universally distributed dog and cat. In the East the dog is rarely other than a homeless, despised outcast. In Europe generally he is a member of the family. But it is to Great Britain especially that we look to find all our domestic animals in the highest perfection, and cherished with feelings of peculiar regard. In Britain it is contrary to law to hitch a dog, however large and strong, to a cart to draw even a small child, while in Germany dogs may be seen used as beasts of burden in all the large cities. In no part of the world are the good qualities of dogs so appreciated and valued as in Great Britain; hence it is not at all inexplicable that cruelty to the dog and other animals is there comparatively rare.

It may safely be said that never before in civilized countries were animals—and especially our domestic animals-treated so well, because never before were they so thoroughly understood. To what is this to be attributed? Not alone to the spread of kindlier feelings and better principles generally, but largely to the advance of science. There was a time, well within the recollection of persons not yet old, when man, we were told by those to whom we looked for light and guidance, stood utterly apart from all else in the universe as the one being in whom the Creator specially, and we might say solely, delighted, and for whose benefit every other object, animate and inanimate, existed. How natural, then, for man to believe that animals, as such, had few if any rights!

The one test to which many persons naturally enough brought every animal was just this: Is the creature of any use whatever to man? If not, then it was held that it simply cumbered the ground. People, it is true, admitted that man was an animal; but they did not realize what this expression meant, or did not accept it in its full significance. To them man was an "animal," but not like the others. He was too exalted to have any more than the common principle of life. Men could not realize then as now that mind and body are so closely related that for every mental process there must be a corresponding physical correlative. But this once being admitted it became possible to understand that animals below man may have minds whose processes are akin to ours. The question then became, not have animals minds, but what sort of minds. Wherein does animal intelligence in the widest sense differ from human intelligence? As soon as man himself became better understood it was plain that his feelings were, on certain

planes, parallel with groups of animals much lower in the scale generally. To them pleasures and pains were just as real as they were similar to those of human beings.

I suggest that these most important advances are owing chiefly to the progress and the diffusion of scientific knowledge and the scientific spirit. The doctrine of organic evolution published by Darwin over thirty years ago at once offered to man a broader kinship than he had previously been able to comprehend. In my opinion the importance of this conception will, for a right understanding of the relations of man and other animals, outweigh all others, because it will bring us to see that, with a common origin, there must always remain numerous similarities of nature.

'But, without taking advantage of the doctrine of evolution, it has become apparent that the claim for man of a nature entirely distinct and different from that of other forms of life is baseless. Gradually, from many different quarters, this conception of similarity of nature is spreading among the masses; and the friend of animals can not do better than encourage people to dwell upon the resemblances rather than the differences between the highest and the lower grades of animal life. It will be readily perceived, then, that my conviction is that we shall best advance the cause we have at heart-the humane treatment of our animals-by spreading sound views of their nature, and in that keeping prominent the resemblances to man rather than the differences from him, many of them questionable, at all events as to kind.

Inasmuch as science has done more than all other agencies in dissipating man's prejudices and freeing the mind from erroneous and enslaving views, it will be wise for all societies with a humane object to think well before in any way interfering with scientific investigations of any kind. Without research the true nature of those diseases which afflict man and the lower animals can not be known.

With many persons dogs and hydrophobia are closely associated mentally, and I recently read an article in which the author spoke of the dog as the "breeder of hydrophobia." The societies. will do good by publishing actual statistics and other details bearing on the nature of this dreaded disease. I have also read arguments for the complete extirpation of dogs based on the fact that some sheep were worried. The plain preventive for rabies is the proper care and management of dogs; and for sheep-worrying, the confinement of dogs at night, which would be, indeed, a proper proceeding if no sheep existed. A roaming dog is no more desirable than a human tramp; but no one has advocated the destruction of the human race to get rid of tramps. In attempting to spread sound views in regard to diseases that are common to man and our domestic animals, such as rabies, indirectly much

information will be given to the public about the care of dogs, with a view to avoiding conditions that simulate this terrible malady. The "mad dog" of the streets is, we know, rarely rabid, and usually only needs a little judicious and kindly assistance to restore him to health. It is just about as reasonable to pounce on and kill a human being that falls in an epileptic fit, as the majority of the dogs that are attacked and killed by an excited crowd.

Above all, the public needs enlightenment regarding the true nature of animals. When that is complete and thorough, right feelings toward them will spring up in the larger proportion of people. I would especially direct attention to the education of children in and out of school on this subject. It should be held before a child as a more cowardly thing to abuse a defenseless. animal than one of its own species. But this will not weigh much with the child if all it hears tends to belittle the creatures by which it is surrounded, and to exalt man beyond all measure. I should begin with very young children by pointing to similarities of structure and function between themselves and the family cat or dog. They have eyes, ears, tongues, etc.; they see, hear, taste, feel pain, and experience pleasure just as children do; therefore, let us recognize their rights, avoid giving them pain, and increase their pleasures. I strongly advocate each family having some one animal, at least, to be brought up with the household to some extent, whether it be bird, cat, or dog. But, on the other hand, it seems to me to be a great mistake to introduce any animal as a mere toy or plaything for very young children. Such a proceeding rather tends to encourage cruelty.

It is of great importance for the education of the public mind that fine specimens of animals be exhibited. All shows for our domestic animals are worthy of encouragement as educators. Many a person that regards the ordinary mongrel dogs of the street with indifference, if not aversion, has his views and feelings. changed when he attends a dog show, with its numerous specimens of fine, pure-bred animals; and the same may be said of horse, cattle, and poultry shows. The æsthetic has a very great influence in our age. We devote a large share of our energies to securing the gratification of our sense of the beautiful. It will be judicious, therefore, to present the beautiful in animals to the public. For this reason, again, exhibitions of superior specimens of domestic animals, zoological gardens, museums, and kindred institutions prepare the public mind to appreciate animals more; and, as I am endeavoring to show, to understand and to admire. are usually necessary steps to the generation of humane feelings toward the creatures with which we come in contact.

Once establish the proper feelings, and fitting conduct is likely to follow; but before these feelings arise we must have right con

VOL. XLIII.—5

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