Notes

1. Syevettsoff's Periodical Phenomena, p. 251.

2. Seyfferlitz, quoted by Brehm, iv. 760.

3. The Arctic Voyages of A.E. Nordenskjold, London, 1879, p. 135. See also the powerful description of the St. Kilda islands by Mr. Dixon (quoted by Seebohm), and nearly all books of Arctic travel.

4. Elliot Coues, in Bulletin U.S. Geol. Survey of Territories, iv. No. 7, pp. 556, 579, etc. Among the gulls (Larus argentatus), Polyakoff saw on a marsh in Northern Russia, that the nesting grounds of a very great number of these birds were always patrolled by one male, which warned the colony of the approach of danger. All birds rose in such case and attacked the enemy with great vigour. The females, which had five or six nests together on each knoll of the marsh, kept a certain order in leaving their nests in search of food. The fledglings, which otherwise are extremely unprotected and easily become the prey of the rapacious birds, were never left alone ("Family Habits among the Aquatic Birds," in Proceedings of the Zool. Section of St. Petersburg Soc. of Nat., Dec. 17, 1874).

5. Brehm Father, quoted by A. Brehm, iv. 34 seq. See also White's Natural History of Selborne, Letter XI.

6. Dr. Coues, Birds of Dakota and Montana, in Bulletin U.S. Survey of Territories, iv. No. 7.

7. It has often been intimated that larger birds may occasionally transport some of the smaller birds when they cross together the Mediterranean, but the fact still remains doubtful. On the other side, it is certain that some smaller birds join the bigger ones for migration. The fact has been noticed several times, and it was recently confirmed by L. Buxbaum at Raunheim. He saw several parties of cranes which had larks flying in the midst and on both sides of their migratory columns (Der zoologische Garten, 1886, p. 133).

8. H. Seebohm and Ch. Dixon both mention this habit.

9. The fact is well known to every field-naturalist, and with reference to England several examples may be found in Charles Dixon's Among the Birds in Northern Shires. The chaffinches arrive during winter in vast flocks; and about the same time, i.e. in November, come flocks of bramblings; redwings also frequent the same places "in similar large companies," and so on (pp. 165, 166).

10. S.W. Baker, Wild Beasts, etc., vol. i. p. 316.

11. Tschudi, Thierleben der Alpenwelt, p. 404.

12. Houzeau's Etudes, ii. 463.

13. For their hunting associations see Sir E. Tennant's Natural History of Ceylon, quoted in Romanes's Animal Intelligence, p. 432.

14. See Emil Huter's letter in L. Buchner's Liebe.

15. With regard to the viscacha it is very interesting to note that these highly-sociable little animals not only live peaceably together in each village, but that whole villages visit each other at nights. Sociability is thus extended to the whole species—not only to a given society, or to a nation, as we saw it with the ants. When the farmer destroys a viscacha-burrow, and buries the inhabitants under a heap of earth, other viscachas—we are told by Hudson—"come from a distance to dig out those that are buried alive" (l.c., p. 311). This is a widely-known fact in La Plata, verified by the author.

16. Handbuch für Jäger und Jagdberechtigte, quoted by Brehm, ii. 223.

17. Buffon's Histoire Naturelle.

18. In connection with the horses it is worthy of notice that the quagga zebra, which never comes together with the dauw zebra, nevertheless lives on excellent terms, not only with ostriches, which are very good sentries, but also with gazelles, several species of antelopes, and gnus. We thus have a case of mutual dislike between the quagga and the dauw which cannot be explained by competition for food. The fact that the quagga lives together with ruminants feeding on the same grass as itself excludes that hypothesis, and we must look for some incompatibility of character, as in the case of the hare and the rabbit. Cf., among others, Clive Phillips-Wolley's Big Game Shooting (Badminton Library), which contains excellent illustrations of various species living together in East Africa.

19. Our Tungus hunter, who was going to marry, and therefore was prompted by the desire of getting as many furs as he possibly could, was beating the hill-sides all day long on horseback in search of deer. His efforts were not rewarded by even so much as one fallow deer killed every day; and he was an excellent hunter.

20. According to Samuel W. Baker, elephants combine in larger groups than the "compound family." "I have frequently observed," he wrote, "in the portion of Ceylon known as the Park Country, the tracks of elephants in great numbers which have evidently been considerable herds that have joined together in a general retreat from a ground which they considered insecure" (Wild Beasts and their Ways, vol. i. p. 102).

21. Pigs, attacked by wolves, do the same (Hudson, l.c.).

22. Romanes's Animal Intelligence, p. 472.

23. Brehm, i. 82; Darwin's Descent of Man, ch. iii. The Kozloff expedition of 1899-1901 have also had to sustain in Northern Thibet a similar fight.

24. The more strange was it to read in the previously-mentioned article by Huxley the following paraphrase of a well-known sentence of Rousseau: "The first men who substituted mutual peace for that of mutual war—whatever the motive which impelled them to take that step—created society" (Nineteenth Century, Feb. 1888, p. 165). Society has not been created by man; it is anterior to man.

25. Such monographs as the chapter on "Music and Dancing in Nature" which we have in Hudson's Naturalist on the La Plata, and Carl Gross' Play of Animals, have already thrown a considerable light upon an instinct which is absolutely universal in Nature.

26. Not only numerous species of birds possess the habit of assembling together—in many cases always at the same spot—to indulge in antics and dancing performances, but W.H. Hudson's experience is that nearly all mammals and birds ("probably there are really no exceptions") indulge frequently in more or less regular or set performances with or without sound, or composed of sound exclusively (p. 264).

27. For the choruses of monkeys, see Brehm.

28. Haygarth, Bush Life in Australia, p. 58.

29. To quote but a few instances, a wounded badger was carried away by another badger suddenly appearing on the scene; rats have been seen feeding a blind couple (Seelenleben der Thiere, p. 64 seq.). Brehm himself saw two crows feeding in a hollow tree a third crow which was wounded; its wound was several weeks old (Hausfreund, 1874, 715; Buchner's Liebe, 203). Mr. Blyth saw Indian crows feeding two or three blind comrades; and so on.

30. Man and Beast, p. 344.

31. L.H. Morgan, The American Beaver, 1868, p. 272; Descent of Man, ch. iv.

32. One species of swallow is said to have caused the decrease of another swallow species in North America; the recent increase of the missel-thrush in Scotland has caused the decrease of the song-thrush; the brown rat has taken the place of the black rat in Europe; in Russia the small cockroach has everywhere driven before it its greater congener; and in Australia the imported hive-bee is rapidly exterminating the small stingless bee. Two other cases, but relative to domesticated animals, are mentioned in the preceding paragraph. While recalling these same facts, A.R. Wallace remarks in a footnote relative to the Scottish thrushes: "Prof. A. Newton, however, informs me that these species do not interfere in the way here stated" (Darwinism, p. 34). As to the brown rat, it is known that, owing to its amphibian habits, it usually stays in the lower parts of human dwellings (low cellars, sewers, etc.), as also on the banks of canals and rivers; it also undertakes distant migrations in numberless bands. The black rat, on the contrary, prefers staying in our dwellings themselves, under the floor, as well as in our stables and barns. It thus is much more exposed to be exterminated by man; and we cannot maintain, with any approach to certainty, that the black rat is being either exterminated or starved out by the brown rat and not by man.

33. "But it may be urged that when several closely-allied species inhabit the same territory, we surely ought to find at the present time many transitional forms…. By my theory these allied species are descended from a common parent; and during the process of modification, each has become adapted to the conditions of life of its own region, and has supplanted and exterminated its original parent-form and all the transitional varieties between its past and present states" (Origin of Species, 6th ed. p. 134); also p. 137, 296 (all paragraph "On Extinction").

34. According to Madame Marie Pavloff, who has made a special study of this subject, they migrated from Asia to Africa, stayed there some time, and returned next to Asia. Whether this double migration be confirmed or not, the fact of a former extension of the ancestor of our horse over Asia, Africa, and America is settled beyond doubt.

35. The Naturalist on the River Amazons, ii. 85, 95.

36. Dr. B. Altum, Waldbeschadigungen durch Thiere und Gegenmittel (Berlin, 1889), pp. 207 seq.

37. Dr. B. Altum, ut supra, pp. 13 and 187.

38. A. Becker in the Bulletin de la Societe des Naturalistes de Moscou, 1889, p. 625.

39. Russkaya Mysl, Sept. 1888: "The Theory of Beneficency of Struggle for Life, being a Preface to various Treatises on Botanics, Zoology, and Human Life," by an Old Transformist.

40. "One of the most frequent modes in which Natural Selection acts is, by adapting some individuals of a species to a somewhat different mode of life, whereby they are able to seize unappropriated places in Nature" (Origin of Species, p. 145)—in other words, to avoid competition.