was born in Salem, Mass., April 26, 1836. After graduating at the High School of his native town in 1854, he entered the Lawrence Scientific School of Harvard University. In the summer of the following year he went to Germany, and matriculated at the University of Frederick Wilhelm, Berlin, in the Fall of the same year, and was graduated at the University of George Augusta, at Gottingen, in the Autumn of 1857, with the degrees of Master of Arts and Doctor of Philosophy. Upon his graduation he entered upon a practical course in Mining and Metallurgy, at the Mining School of Freiburg, in Saxony. After making a tour of the Continent and England, he returned home and engaged as the Assistant of Prof. J. D. Whitney, now of Harvard University, in the State Geological Surveys of the States of Wisconsin and Illinois, embracing the Upper Mississippi lead region. He continued with Prof. Whitney during the survey, comprising the southeastern part of Iowa. On the establishment of the New York State Agricultural College at Ovid, the foundation of which was subsequently merged with that of Cornell University, Dr. Kimball was appointed to the Chair of Professor of Chemistry and Economic Geology. Upon the appointment of the President of the college, Gen. Patrick, as Brigadier-General of Volunteers, Dr. Kimball became that officer’s Chief of Staff, with a commission from the President of the United States, as Assistant Adjutant-General of Volunteers, with the rank of Captain. This was in 1862. His first service in the field was with the Army of the Rappahannock, under Gen. McDowell. He took part in numerous engagements, notably, those of Groveton, Manassas, Chantilly, South Mountain, Antietam, Fredericksburg, Chancellorsville, and Gettysburg. General Patrick having been assigned to duty as Provost-Marshal of the Army of the Potomac, Capt. Kimball accompanied him, and served on the General Staff of that army under Generals McClellan, Burnside, Hooker, and Meade, successively. When the army went into winter quarters, Capt. Kimball, whose health had become impaired, resigned from the army, and settled in New York. He resumed the practice of his profession as Mining Engineer and Metallurgist. Upon his marriage, in 1874, he accepted an honorary Professorship in Lehigh University, Bethlehem, Pa., removing from New York to one of the houses in the beautiful park and grounds of that institution, though retaining his office and business in New York City.