he distinguished himself so much that he received a regiment of dragoons. Later, at the sieges of Belgrade and Mayence, he increased his reputation, and on the outbreak of war between France and Austria he received the command of the Imperial forces sent to Piedmont to act in conjunction with the troops of the Duke of Savoy. At the end of the war he was sent as commander-in-chief to Hungary, where he defeated the Turks at the battle of Zenta (11th Sept., 1697). The War of the Spanish Succession brought Eugene again into the field. In Northern Italy he outmanœuvred Catinat and Villeroi, defeating the latter at Cremona (1702). In 1703 he commanded the Imperial army in Germany, and in co-operation with Marlborough frustrated the plans of France and her allies. In the battle of Blenheim, Eugene and Marlborough defeated the French and Bavarians under Marshal Tallard, 13th Aug., 1704. Next year Eugene, returning to Italy, forced the French to raise the siege of Turin, and in one month drove them out of Italy. During the following years he fought on the Rhine, took Lille, and, in conjunction with Marlborough, defeated the French at Oudenarde (1708), and Malplaquet (1709), where he himself was dangerously wounded. After the recall of Marlborough, which Eugene opposed in person at London, without success, and the defection of England from the alliance against France, his further progress was in a great measure checked. In the war with Turkey, in 1716, Eugene defeated two superior armies at Peterswardein and Temesvar, and, in 1717, took Belgrade, after having gained a decisive victory over a third army that came to its relief. During fifteen years of peace which followed, Eugene served Austria as faithfully in the Cabinet as he had done in the field. He was one of the great generals of modern times.—Cf. G. B. Malleson, Prince Eugene of Savoy.

Euge´nia (so named in honour of Prince Eugene), a genus of Myrtaceæ, nearly related to the myrtle. It contains numerous species, some of which produce delicious fruits. Cloves are the dried flower-buds of E. caryophyllata.

Eugenics has been defined as "the study of agencies under social control that may improve or impair the racial qualities of future generations, either physically or mentally". It is concerned with the investigation of the physical, mental, and moral traits of mankind, and especially with the factors of inheritance of desirable and undesirable qualities. The interest in the subject is largely due to the untiring zeal of the late Sir Francis Galton, who devoted most of his life to the study of the manifold problems that came within the scope of 'eugenics', and, in accordance with the terms of his will (1908), founded the Galton Chair of Eugenics in the University of London. The library and laboratory of the Galton benefaction form part of the Department of Applied Statistics, under the direction of Professor Karl Pearson, F.R.S., at University College, London, who is also the editor of the journal Biometrika, which is devoted to the statistical side of the problems of anthropology and heredity. The aim of the Galton laboratory is to collect material relating to human heredity, and to investigate its significance; and also to extend the knowledge of eugenics by professional instruction, lectures, publications, and experimental work. The scope of its activities will best be appreciated by the study of such works as the late Sir Francis Galton's Natural Inheritance (1889) and Essays in Eugenics (1909), and Professor Karl Pearson's Groundwork of Eugenics (1909), Practical Problems of Eugenics (1909), and State of National Eugenics (1909). The Treasury of Human Inheritance, issued in parts from the Galton laboratory, is a monumental record of facts relating to the hereditary transmission of human qualities. The Eugenics Education Society, under the presidency of Major Leonard Darwin, has for its aim the stimulation of public interest in the subject, and the discussion of the problems of heredity. It issues a journal, The Eugenics Review, now in its twelfth year.

It has long been known that by means of careful selection of parents it was possible to breed horses, cattle, dogs, &c., and a great variety of food- and flowering-plants, with desirable qualities highly developed. But it is obvious that such direct methods cannot be applied to human beings for the purpose of breeding men and women with special traits. What the eugenic societies aim at doing is to educate the people to realize the far-reaching effects of the inheritance of good or bad qualities, in the hope that such knowledge may exert some influence in the choice of partners in matrimony. But their efforts are especially directed to the exposure of the disastrous results that may ensue from the contamination of a family by the intermarriage of one of its members with an individual subject to some hereditary defect of a physical, mental, or moral nature.

The study of eugenics is intimately related to a wide range of subjects: to genetics, which explains the laws that govern the heredity of specific traits in man, and suggests certain practical applications of the rules of breeding to race improvement by cutting off undesirable strains and by selecting mates desirable from the eugenic standpoint; to the study of biographies of individuals and the genealogies of families, for the purpose of obtaining data for the investigation of the working of inheritance; to anthropology, history, and archæology, law

and politics, economics and sociology, medicine and psychology, and statistical science.

The tremendous stimulus which the rapid development of eugenics has given to the wider recognition of the significance of heredity in human affairs has tended to obscure the importance of social environment and individual experience, especially in children of tender age, in shaping the attitude of the individual. Education is a vastly more important factor—the manner and attitude of the teacher, rather than the subject-matter of his or her lessons—than the eugenic enthusiasts, with their over-emphasis on the dominance of hereditary influences, are willing to admit. In the causation of many diseases, commonly reputed to be hereditary, such as tuberculosis and certain forms of insanity, the social and physical circumstances probably play a more important part than heredity in determining the onset of the illness, even when some undoubted hereditary aptitude to fall a victim to one or other of these affections is admitted. In no branch of medicine or sociology is this fallacy more fruitful of error than in the domain of mental disease. Apart from certain physical defects of the nervous system and specific infections, such as syphilis, the causes of mental alienation are to be sought rather in some maladjustment to the individual's social circumstances, often the result of some emotional disturbance, even in early childhood, which created the attitude of mind that eventually determined the mental conflict expressed by the insanity. The study of the effects of the strain of war has shown that anxiety, if sufficiently intense and prolonged, can produce mental disturbance in anyone, whatever his heredity and antecedents. By over-emphasizing the importance of inheritance in the causation of such conditions as insanity and epilepsy, and ignoring the effects of the profound social disturbance an insane parent may inflict upon any home, and especially upon the impressionable minds of young children in it, the eugenic societies have been responsible for raising up a growing body of opposition to their views. Not only in the domains of medicine and psychology, but also in those of ethnology and sociology, there is a feeling that the eugenic claims have been pushed too far. But when the subject of eugenics has been pruned of these extravagances, it will exert a far-reaching influence upon social and political organization and events by compelling respect for the vast importance of heredity as a factor that plays some part in determining the physical, mental, and moral qualities of mankind. References to the voluminous literature will be found in The Eugenics Review (published by the Eugenics Education Society, Kingsway, London).

Eugénie (eu-zhā-nē), Marie de Guzman, ex-Empress of the French, born at Granada, in Spain, 5th May, 1826, died at Seville 11th July, 1920. Her father, the Count de Montijo, was of a noble Spanish family; her mother was of Scotch extraction, maiden name Kirkpatrick. On 29th Jan., 1853, she became the wife of Napoleon III and Empress of the French. On 16th March, 1856, a son was born of the marriage. When the war broke out with Germany, she was appointed regent (15th July, 1870) during the absence of the emperor, but on the 4th Sept. the Revolution forced her to flee from France. She went to England, where she was joined by the Prince Imperial and afterwards by the emperor. Camden House, Chislehurst, became the residence of the imperial exiles. On 9th Jan., 1873, the emperor died, and six years later the Prince Imperial was slain while with the British army in the Zulu War. In 1881 the empress transferred her residence to Farnborough, in Hampshire. During the European War she established a hospital at Farnborough. In 1918 she handed over to Clemenceau the letters which she had received from William I in 1870. The letters shed a striking light upon the ambitions of Prussia. She was buried in the mausoleum at Farnborough.—Bibliography: De Lano, The Empress Eugénie; Tschuddi, Eugéne, Empress of the French; Stoddart, The Life of Empress Eugénie; E. Legge, The Empress Eugénie and her Son.

Euge´nius, the name of four Popes.—1. Eugenius I, elected 8th Sept., 654, while his predecessor, Martin I, was still living; died in 657 without having exerted any material influence on his times.—2. Eugenius II held the see from 824-827.—3. Eugenius III, born at Pisa, was a disciple of St. Bernard of Clairvaux. He was raised to the popedom in 1145; was obliged to quit Rome in 1146 in consequence of the commotions caused by Arnold of Brescia; returned with the help of King Roger of Sicily in 1150, and died in 1153.—4. Eugenius IV, from Venice, originally called Gabriel Condolmero, was raised to the popedom in 1431. In consequence of his opposition to the Council of Basel he was deposed. He died in 1447.

Eugenol, or Allylguaiacol, is found in cloves, the leaves of cinnamon, and other plants. About 90 per cent of clove oil is composed of eugenol.