'68 



WEBSTEE, HOEACE. 



TTEISBACH, JULIUS L. 



Included in the census are four Chinese and 

 229 Indians. The total taxation includes $871,- 

 893 not distributed among counties. The true 

 value of property was $409,588,133. The pub- 

 lic debt, county, city, town, etc., amounted to 

 $7,530,416. The aggregate value of farm- 

 products, including betterments and additions 



to stock, was $51,074,801 ; 877,110 pounds of 

 wool were raised ; 123,538 whites, and 322,- 

 236 colored persons, ten years old and over, 

 cannot write, of whom 211,278 are males, and 

 234,496 are females. Of those twenty-one 

 years old and over, who cannot write, 27,646 

 are white males. 



WEBSTEE, HOEACE, M. D., LL. D., an emi- 

 nent scholar and teacher, long President of the 

 College of the City of New York, born in Ver- 

 mont, in 1795 ; died at Geneva, N. Y., July 12, 

 1871. He was, at the time of his death, one 

 of the oldest graduates of the United States 

 Military Academy, having been graduated in 

 1818, and promoted to be second-lieutenant of 

 infantry. He served as Assistant Professor of 

 Mathematics at the Academy from 1818 to 

 1825, after which he resigned and took the 

 position of Professor of Mathematics and Nat- 

 ural Philosophy at Geneva College, which he 

 held until 1848. He became principal of the 

 New York Free Academy at the time of its 

 formation in July, 1848, and was retained in 

 his place, with the title of President, when its 

 name was changed to the Free College. For 

 a long time he acted as Professor of Moral, 

 Intellectual, and Political Philosophy at the 

 academy, or college, as it is now termed. He 

 retired from the presidency of the college in 

 1869. Among the degrees which he had con- 

 ferred on him was that of A. M. by Nassau Hall 

 at Princeton ; LL. D. by Columbia College, in 

 1849, and by Kenyon College of Ohio in 1842; 

 and M. D. by the University of Pennsylvania, 

 in 1850. 



WEISBACH, JULIUS LUDWIG, an eminent 

 Germ an mathematician, engineer, and scientific 

 writer, born at Mittelschmiedeberg, near An- 

 naberg in Saxony, August 10, 1810 ; died at 

 Freiberg, February 24, 1871. His father was 

 a conductor of mines, and educated his son to 

 follow his own profession. He entered the 

 Mining Academy at Freiberg in 1822, and, 

 upon the completion of his course there, stud- 

 ied at the Universities of Gottingen and Vienna. 

 Upon the death of Prof. -Hect, of the Freiberg 

 Academy, in the spring of 1833, Weisbach com- 

 pleted the courses upon "applied mathemat- 

 ics" and "the construction of mining machin- 

 ery ; " and in the same year he became per- 

 sonally attached to that institution, lecturing 

 regularly on those subjects. In 1835 he un- 

 dertook, in addition, the course on " mining- 

 surveying" (Markscheidekunst), and by his 

 genius made it what it now is, one of the most 

 important studies of the academy, and almost 

 an exact science. In 1842, Prof. Naumann 

 having been called to the University of Leip- 

 sic, he undertook the course on crystallog- 

 raphy. In 1851 he began to lecture on de- 

 scriptive geometry, a subject which had not 



previously been treated separately at the 

 academy. About 1858 he undertook a course 

 upon the construction of machines, dividing it 

 into two parts, one theoretical and the other 

 practical. At the same time he changed the 

 course on crystallography into a course on 

 mathematical crystallography, and introduced 

 another course, viz., " theoretical optics," 

 relinquishing descriptive geometry to Prof. 

 Junge. Upon the death of the latter, in 18G8, 

 lie assumed the entire charge, with the aid of 

 his son-in-law, of the whole subject of mining- 

 surveying, the theoretical part of which had 

 always remained in his hands. But, though 

 the most successful of teachers, "Weisbach was 

 much more than a mere teacher of engineering 

 or its related sciences. In hydraulic engi- 

 neering, as an experimenter and original inves- 

 tigator, and as the highest authority on all 

 questions connected with hydraulic science, 

 he had no rival, and it will be long before the 

 loss to the scientific world occasioned by his 

 death can be made good. The experiments 

 which he made to determine the coefficients 

 for the efflux of water under different circum- 

 stances, for the efflux of air, for the flow of 

 water through pipes, etc., and also with a 

 view of studying the force of water due to 

 pressure, impact, etc., are numbered by thou- 

 sands. It was he who first introduced into 

 calculations in hydraulics what is known as 

 the " coefficient of resistance," by means of 

 which such computations are often very much 

 simplified. He was also a standard authority 

 on all questions of practical geology. To him 

 was confided the task of making the triangu- 

 lation of Saxony for the purpose of measuring, 

 in connection with the other German States, 

 the length of a degree in Central Europe. He 

 also made the surveys and triangulation for 

 the Eothschonberger Stollen, which is to bo 

 the longest tunnel or adit in the world. He 

 had made many valuable contributions to 

 science. There is, we believe, no complete 

 list of his scientific works and papers, but tho 

 following are the most important : "Eesearches 

 upon Mechanics and Hydraulics," in four vols. 

 (1842-43) ; " Manual for the Mechanical, Min- 

 ing Engineer," two vols. (1835-'36) ; "Ele- 

 ments of Mathematics" (1835); "Tables of 

 Multiples of Sines and Cosines" (1842); 

 "Treatise on Practical Mechanics," 3 vols. 

 (1845-'54), translated and republished here; 

 " The Engineer : a Collection of Tables and 



