HAGENIJACH, KARL A. 



HARTSCFF, GEORGE L. 



]..[," (1868); " History of Franco for my 

 Irhil.ln-M," 3 vnlM. (1870-'74); "History 

 lurGrvul Kn-m-h Christians" (1873-74), 



M. Gtii/ot la-longed to the Institute of France 



hy three se|i.'ir;ite title*. IK- had l>ccii iidmiit.-.l 



a tin -mil. -i- <>!' tho Academy of Moral and 1'oliti- 



, (Section of History) at its reorgan- 



ho was chosen a member of the 



:uy uf Inscriptions and Belles-Lettres, to 



succeed Dacier, in 1833, and elected a member 



nt' i ho J-'rciich Academy to succeed Count de 

 Traooy, in 1880. He had !/ n <.r;m<l Crm.fi of 

 the Legion of Honor since 1840, and held the 

 name rank in most of the orders of tin- other 

 countries of Lnrope. Host of his works had 

 been translated into English, and many of tlu-m 

 republished in this country. The more impor- 

 tant have also been translated into nearly all 

 the languages of Europe. 



H 



HAGENBAOH, KARL ADOLF, S. T. D., a 

 C.cnnan Protestant theologian, professor, and 

 author; born at Basle, Switzerland, May 4, 

 isol, died in that city June 8, 1874. "His 

 father was an eminent naturalist and physician, 

 at tho time of his birth Professor of Anatomy 

 and Botany in the University of Basle. The 

 son, after obtaining his classical and academical 

 education in the gymnasia of his native city, 

 attended the Universities of Bonn and Berlin, 

 to study theology. In 1823 he returned to 

 Basle, was immediately appointed teacher-pu- 

 pil in the university, soon after adjunct-pro- 

 fessor, and in 1828 Professor of Theology in 

 the university. In 1830 the university con- 

 ferred on him the honorary degree of Doctor 

 in Theology. He retained his professorship 

 till his death. He was very popular as a 

 teacher, but the greatest service which he has 

 rendered to theology has been conferred in his 

 numerous historical and dogmatic works. So 

 early as 1828 he published his " Conspectus of 

 Dogmatic History." From 1834 to 1843 his 

 Lectures on the Spirit and History of the 

 Reformation " were issued in six volumes, and 

 during the same period his " Historical Devel- 

 opment of Evangelical Protestantism ; " his 

 41 Ecclesiastical History of the Eighteenth and 

 Nineteenth Centuries," 2 vols. ; his u Treatise 

 on Dogmatic History," in 2 vols. (1840-'41); 

 in 1855-'66 he issued his "Lessons upon An- 

 cient Ecclesiastical History," in 2 vols., which 

 were translated into Dutch, English, and other 

 languages. This was followed in 1860-'61 by 

 "Lessons upon the Ecclesiastical History of 

 the Middle Ages," also in 2 vols. Besides 

 these works, Dr. Hagenbach had published, in 

 1833-'84, an " Encyclopaedia and Methodology 

 of the Theological Sciences," in several vol- 

 umes; a collection of his "Sermons," in 4 

 vols. (18SO-'36); "A Discourse in Memory 

 of De Wette" (1850); a "Guide to Christian 

 Instruction " (1850), which was enlarged in 

 1854 into a " Compendium of the History of 

 Doctrines;" and an "Essay on the Introduc- 

 tion of the First Clergymen to the Evangelical 

 Commune of Rheinfeld " (1856). Most of his 

 historical works have been translated into 

 English, and several of them have been re- 

 printed here. Dr. Hagenbach's attainments 

 in ecclesiastical history were hardly surpassed 



by those of Neander, and were not equaled 

 by any other theologian of modern times. 

 His works are, in their department, of very 

 great value to the student of theology. 



1IANSEN, PETKK ANDREAS, a German as- 

 tronomer, born at Tondern, in the duchy of 

 Schleswig, December 8, 1795 ; died in Seeberg, 

 near Gotha, in Saxony, April 1, 1874. Ho 

 studied mathematics and astronomy, and was 

 employed in 1821 in the triangulation of the 

 duchy of Holstein, under the direction of 

 Schumacher, whom he also aided in his duties 

 as director of the observatory of Altona. In 

 1825 he was appointed director of the Observ- 

 atory of Seeberg, near Gotha, where he re- 

 mained until his death. Hanson was a remark- 

 able mathematician. He took great delight in 

 the most difficult problems, and devoted much 

 time to the abstruse calculations of the pertur- 

 bations of the planets. He had published 

 several of these in the Astronomical Netcs, con- 

 ducted by Schumacher, in the "Transactions 

 of the Royal Astronomical Society," and of 

 the "Royal Society of London," in the "Bul- 

 letin of the Academy of Sciences of Saxony," 

 and in other publications. But, though preem- 

 inently a mathematician, he did not neglect 

 other departments of astronomical science. 

 As early as 1827 he published " Method of Ob- 

 servation with the Objective Micrometer of 

 Fraunhofer;" in 1831, " Researches upon the 

 Mutual Perturbations of Jupiter and Saturn ;" 

 in 1838, " Foundations for a New Investigation 

 of the True Orbit traversed by the Moon ; " in 

 1843, "Calculations of the Absolute Perturba- 

 tions in Certain Ellipses of Eccentricity and 

 of Inclination." This last formed the first 

 part of the " Memoirs of the Observatory of 

 Seeberg." In 1854 he prepared a memoir on 

 the movements of the pendulum, which was 

 crowned by the Academy of Sciences of Sax- 

 ony. He had invented a new method of cal- 

 culating tables of the motions of the sun and 

 of the moon, and had expended a vast amount 

 of labor on their construction. Olafsen, the 

 Danish astronomer, had aided him in the first 

 set, but the tables of the moon he had calcu- 

 lated alone. 



HARTSUFF, Major-General GEORGE L., 

 U. 8. Army, a gallant and faithful army officer, 

 distinguished for his services in two wars, born 



