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 “apple-bearing.” Here also the material for fixing the site of the original habitat is untrustworthy.

The attempt has been made to limit the possible area by a consideration of three animals which are said not to occur in certain parts of it—(a) the eel, which is said not to be found in the Black Sea; (b) the honey bee, which is not found in that part of Central Asia drained by the Oxus and Jaxartes; (c) the tortoise, which is not found in northern areas. From evidence collected by Schrader from a specialist at Bucharest (Sprachvergleichung,3 ii. p. 147) eels are found in the Black Sea. The argument, therefore, for excluding the area which drains into the Black Sea from the possible habitat of the primitive Indo-European community falls to the ground. Honey was certainly familiar at an early age, as is shown by the occurrence of the word *medhu, Skt. mádhu, Gr.  (here the meaning has shifted from mead to wine), Irish mid, English mead, Old Slav, medŭ, Lithuanian medùs honey, midùs mead. Schrader, who is the first to utilize the name of the tortoise in this argument, points out (op. cit. p. 148) that forms from the same root occur in both a centum and a satem language—Gr. , Old Slav. žĭly, želŭvĭ—but that while it reaches far north in eastern Europe, it does not pass the 46th parallel of latitude in western Europe. This argument would make not only the German site for the original home which is supported by Kossinna and Hirt impossible, but also that of Scandinavia contended for by Penka.

From the foregoing it will be seen that the arguments for any given area are not conclusive. In the great plain which extends across Europe north of the Alps and Carpathians and across Asia north of the Hindu Kush there are few geographical obstacles to prevent the rapid spread of peoples from any part of its area to any other, and, as we have seen, the Celts and the Hungarians, &c., have, in the historical period, demonstrated the rapidity with which such migrations could be made. Such migration may possibly account for the appearance of a people using a centum language so far east as Turkestan. But our information as to Tocharish is still too fragmentary to decide the question. It is impossible here to discuss at any length the relations between the separate Indo-European languages, a subject which has formed, from somewhat different points of view, the subject of Kretschmer’s Einleitung in die Geschichte der griechischen Sprache and Meillet’s Les Dialectes indo-européennes.

—Besides the articles on the separate languages in this Encyclopaedia the following works are the most important for consultation: K. Brugmann (phonology and morphology) and B. Delbrück (syntax), Grundriss der vergleichenden Grammatik der indogermanischen Sprachen (1886–1900), ed. 2, vol. i. (1897); of vol. ii. two large parts, including the stem formation and inflexion of the noun, the pronoun and the numerals, have been published in 1906 and 1909. A shorter work by Brugmann, Kurze vergleichende Grammatik der indogermanischen Sprachen, dealing mainly with Sanskrit, Greek, Latin, Germanic and Slavonic, appeared in three parts in 1902–1903. A good but less elaborate work is A. Meillet, Introduction à l’étude comparative des langues indo-européennes (1903, 2nd ed. 1908). For the ethnological argument: W. Z. Ripley, The Races of Europe (1900); G. Sergi, The Mediterranean Race (English edition, 1901). Other works, now largely superseded, which deal with this argument are K. Penka, Origines Ariacae (1883), and Die Herkunft der Arier (1886), and I. Taylor, The Origin of the Aryans, (1890). The ethnologists are no more in agreement than the philologists. For the arguments mainly from the linguistic side see especially O. Schrader, Sprachvergleichung und Urgeschichte (3rd ed., 2 vols., 1906–1907)—the second edition was translated into English by Dr F. B. Jevons under the title Prehistoric Antiquities of the Aryan Peoples (1890); Reallexikon der indogermanischen Altertumskunde (1901); M. Much, Die Heimat der Indogermanen (1902, 2nd ed. 1904); E. de Michelis, L’Origine degli Indo-europei (1903); H. Hirt, Die Indogermanen (2 vols., 1905–1907); S. Feist, Europa im Lichte der Vorgeschichte und die Ergebnisse der vergleichenden indogermanischen Sprachwissenschaft, 1910, in W. Sieglin’s Quellen und Forschungen zur alten Geschichte und Geographie. Important for special sections of this question are S. Müller, Nordische Altertumskunde (2 vols., 1897–1898), and Urgeschichte Europas (1905); V. Hehn, Kulturpflanzen und Haustiere (1870), 7th ed. edited by O. Schrader, with contributions on botany by A. Engler (1902); J. Hoops, Waldbäume und Kulturpflanzen im germanischen Altertum (1905). Delbrück has devoted a special monograph to the I.-E. names of relationships, from which he shows that the I.-E. family was patriarchal, not matriarchal (Die idg. Verwandtschaftsnamen, 1889). E. Meyer, from Tocharish being a centum language, has revived with reserve the hypothesis of the Asiatic origin (Geschichte des Altertums,2 I. 2, p. 801).

 INDOLE, or, C8H7N, a substance first prepared by A. Baeyer in 1868. It may be synthetically obtained by distilling oxindole (C8H8NO) with zinc dust; by heating ortho-nitrocinnamic acid with potash and iron filings; by the reduction of indigo blue; by the action of sodium ethylate on ortho-aminochlorstyrene; by boiling aniline with dichloracetaldehyde; by the dry distillation of ortho-tolyloxamic acid; by heating aniline with dichloracetal; by distilling a mixture of calcium formate and calcium anilidoacetate; and by heating pyruvic acid phenyl hydrazone with anhydrous zinc chloride. It is also formed in the pancreatic fermentation of albumen, and, in small quantities, by passing the vapours of mono- and dialkylanilines through a red-hot tube. It crystallizes in shining leaflets, which melt at 52° C. and boil at 245° C. (with decomposition), and is volatile in a current of steam. It is a feeble base, and gives a cherry-red coloration with a pine shaving. Many derivatives of indole are known. B-methylindol or skatole occurs in human faeces.

 INDONESIAN, a term invented by James Richardson Logan to describe the light-coloured non-Malay inhabitants of the Eastern Archipelago. It now denotes all those peoples of Malaysia and Polynesia who are not to be classified as Malays or Papuans, but are of Caucasic type. Among these are the Battaks of north Sumatra; many of the Bornean Dyaks and Philippine Islanders, and the large brown race of east Polynesia which includes Samoans, Maoris, Tongans, Tahitians, Marquesas Islanders and the Hawaiians.

See J. Richardson Logan, The Languages and Ethnology of the Indian Archipelago (1857).

 INDORE, a native state of India in the central India agency, comprising the dominions of the Maharaja Holkar. Its area, exclusive of guaranteed holdings on which it has claims, is 9500 sq. m. and the population in 1901 was 850,690, showing a decrease of 23% in the decade, owing to the results of famine. As in the case of most states in central India the territory is not homogeneous, but distributed over several political charges. It has portions in four out of the seven charges of central India, and in one small portion in the Rajputana agency. The Vindhya range traverses the S. division of the state in a direction from east to west, a small part of the territory lying to the north of the mountains, but by much the larger part to the south. The latter is a portion of the valley of the Nerbudda, and is bounded on the south by the Satpura hills. Basalt and other volcanic formations predominate in both ranges, although there is also much sandstone. The Nerbudda flows through the state; and the valley at Mandlesar, in the central part, is between 600 and 700 ft. above the sea. The revenue is estimated at £350,000. The metre gauge railway from Khandwa to Mhow and Indore city, continued to Neemuch and Ajmere, was constructed in 1876.

The state had its origin in an assignment of lands made early in the 18th century to Malhar Rao Holkar, who held a command in the army of the Mahratta Peshwa. Of the Dhangar or shepherd caste, he was born in 1694 at the village of Hol near Poona, and from this circumstance the family derives its surname of Holkar. Before his death in 1766 Malhar Rao had added to his assignment large territorial possessions acquired by his armed power during the confusion of the period. By the end of that century the rulership had passed to another leader of the same clan, Tukoji Holkar, whose son, Jaswant Rao, took an important part in the contest for predominance in the Mahratta confederation. He did not, however, join the combined army of Sindha and the raja of Berar in their war against the British in 1803, though after its termination he provoked hostilities which led to his complete discomfiture. At first he defeated a British force that had marched against him under Colonel Monson; but when he made an inroad into British territory he was completely defeated by Lord Lake, and compelled to sign a treaty which deprived him of a large portion of his possessions. After his death his favourite mistress, Tulsi Bai, assumed the regency, until in 1817 she was murdered by the military commanders of the Indore troops, who declared for the peshwa on his rupture with the British government. After their defeat at Mehidpur in 1818, the state submitted by treaty to the loss of more territory, transferred to the British government its suzerainty over a number of minor tributary states, and acknowledged the British protectorate. For many years afterwards the administration of the Holkar princes was troubled by intestine quarrels, misrule and dynastic contentions, necessitating the frequent interposition of British authority;