Samuel Luther Dana
Encyclopedia
Samuel Luther Dana was a United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 chemist
Chemist
A chemist is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties such as density and acidity. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms...

.

Biography

He studied at Phillips Exeter Academy
Phillips Exeter Academy
Phillips Exeter Academy is a private secondary school located in Exeter, New Hampshire, in the United States.Exeter is noted for its application of Harkness education, a system based on a conference format of teacher and student interaction, similar to the Socratic method of learning through asking...

, and graduated from Harvard
Harvard College
Harvard College, in Cambridge, Massachusetts, is one of two schools within Harvard University granting undergraduate degrees...

 in 1813. Desirous of becoming a military engineer
Military engineer
In military science, engineering refers to the practice of designing, building, maintaining and dismantling military works, including offensive, defensive and logistical structures, to shape the physical operating environment in war...

, he applied for an appointment to the U. S. Military Academy, but instead was commissioned a lieutenant in the 1st artillery. He served during the War of 1812
War of 1812
The War of 1812 was a military conflict fought between the forces of the United States of America and those of the British Empire. The Americans declared war in 1812 for several reasons, including trade restrictions because of Britain's ongoing war with France, impressment of American merchant...

 in New York and Virginia
Virginia
The Commonwealth of Virginia , is a U.S. state on the Atlantic Coast of the Southern United States. Virginia is nicknamed the "Old Dominion" and sometimes the "Mother of Presidents" after the eight U.S. presidents born there...

, and at its close resigned from the army. Subsequently he studied medicine, and graduated from Harvard Medical School
Harvard Medical School
Harvard Medical School is the graduate medical school of Harvard University. It is located in the Longwood Medical Area of the Mission Hill neighborhood of Boston, Massachusetts....

 in 1818.

From 1819 until 1826, he practised in Waltham, Massachusetts
Waltham, Massachusetts
Waltham is a city in Middlesex County, Massachusetts, United States, was an early center for the labor movement, and major contributor to the American Industrial Revolution. The original home of the Boston Manufacturing Company, the city was a prototype for 19th century industrial city planning,...

, where he was brought into intimate relations with the early cotton manufacturers of the state, and his fondness for physical science determined him to devote his attention to chemistry as applied to the manufacture and coloring of cotton goods. About 1826, he established a laboratory in Waltham for the manufacture of sulphuric acid and bleaching-salts, which afterward was merged in the Newton Chemical Company, and he was its chemist until 1834.

In 1833 he visited Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

, and spent some time in England
England
England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

 prosecuting chemical investigations. On his return he removed to Lowell, where he became resident and consulting chemist to the Merrimack Manufacturing Company
Merrimack Manufacturing Company
The Merrimack Manufacturing Company was the first of the major textile manufacturing concerns to open in Lowell, Massachusetts, beginning operations in 1823.- History :...

, and continued as such until his death. His investigation in the bleaching of cotton led to the invention of the so-called “American system” of bleaching, which attracted much attention abroad when first published in 1838 in the Bulletin de la société industrielle de Mulhouse.

Many other important improvements in the printing of cottons and the chemical processes involved in that work were made by him, and gave to the goods produced in Lowell a high reputation in the United States. His researches on the action of cow manure as a mordant
Mordant
A mordant is a substance used to set dyes on fabrics or tissue sections by forming a coordination complex with the dye which then attaches to the fabric or tissue. It may be used for dyeing fabrics, or for intensifying stains in cell or tissue preparations. The term mordant comes from the Latin...

, showing that its fixing properties are due to the sodium phosphate that it contains, with the subsequent introduction of “substitutes,” was a decided advance in the art of calico
Calico
-Animals:* Calico butterfly, a genus of brush-footed butterflies commonly called the Crackers, Calicoes, or Clicks*Calico cat, a domestic cat with the common three- or four-colored coat pattern calico -Animals:* Calico butterfly, a genus of brush-footed butterflies commonly called the Crackers,...

 printing.

Works

Dana prepared for the City of Lowell a valuable report on the injurious influence of lead pipes for water used for drinking and culinary purposes. His interest in this subject led him subsequently to translate from the French a “Treatise on Lead Diseases.” He contributed many papers on technical topics to the North American Review
North American Review
The North American Review was the first literary magazine in the United States. Founded in Boston in 1815 by journalist Nathan Hale and others, it was published continuously until 1940, when publication was suspended due to J. H. Smyth, who had purchased the magazine, being unmasked as a Japanese...

and Silliman's American Journal of Science
American Journal of Science
The American Journal of Science is the United States of America's longest-running scientific journal, having been published continuously since its conception in 1818 by Professor Benjamin Silliman, who edited and financed it himself...

, and, in conjunction with his brother, James Freeman Dana
James Freeman Dana
James Freeman Dana was a United States chemist.-Biography:He graduated from Harvard in 1813, and from the medical school in 1817. He studied with Dr...

, he published Outlines of Mineralogy and Geology of Boston and its Vicinity (Boston, 1818). His other works include “Chemical Changes occurring in the Manufacture of Sulphuric Acid” (1833), and his investigations in chemistry applied to agriculture led to the publication of “Muck Manual for Manures” (Lowell, 1842), for which he received a prize from the Massachusetts society for promoting agriculture, and also an “Essay on Manures” (New York, 1843). Prof. Benjamin Silliman, Jr., wrote of him: “In point of time, originality, and ability, Dr. Dana stood deservedly first among scientific writers on agriculture in the United States.”
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