Roscoe, Henry

Roscoe, Henry E. The Life and Experiences of Sir Henry Enfield Roscoe. London Macmillan, 1906. 

Roscoe, Henry E., and Carl Schorlemmer. A Treatise on Chemistry. London Macmillan, 1880. 

Roscoe, Henry, 165-166, 176 n.54, 177, 179 Rose, Heinrich, 106 Rosenberg, Charles, 15 Rosenberger, Ferdinand, 24 Rothstein, E., 217... 

Roscoe, Henry E., and Arthur Harden. A New View of the Origin of Daltons Atomic Theory, [London, 1896]. Facsimile, New York Johnson Reprint Corporation, i960. 

Roscoe, Henry E. John Dalton and the Rise of Modern Chemistry (Macmillan, 1895). 

Roscoe, Henry E. (1882), President s address. Proceedings of the First General Meeting, The Society of Chemical Industry, Manchester, 1-7. 

Deviations from Henry s law are exhibited by most gases having absorption coefficients greater than 100. In some cases the discrepancies vanish at higher temperatures. Thus Roscoe and Dittmar (1860) found that ammonia did not follow the law of Henry at the ordinary temperature, but Sims (1862) showed that the deviations from the law became less as the temperature at which absorption occurred increased, until at 100° the amount of ammonia dissolved by water was directly proportional to the pressure. The deviations appear to be always greatest under small pressures, and to decrease with increasing pressure, and therefore with increasing concentration of the solution they are doubtless due to chemical interaction between the solvent and dissolved gas. 

Frankland left Owens College in 1857 to teach at St. Bartholomew s Hospital in London, and in 1865, he succeeded Hofmann at the Royal School of Mines, when Hofmann left London to return to Germany. Frankland s successor at Owens was Henry Roscoe, who had just returned from studying with Bunsen at Heidelberg and who was the son of a distinguished Lancashire family (and the uncle of Beatrix Potter). 

Quoted in D. Bettridge, "The Teaching of Chemistry in Victorian and Edwardian Times," RIC Reviews 3 (1970) 161176,on 170. Also see H. E. Roscoe, The Life and Experiences of Sir Henry Enfield Roscoe (London Macmillan, 1906). 

A letter from Edward Frankland to Henry Armstrong, dated 12 January 1869, reports that the principal of Owens College and Roscoe found Leipzig, on the whole, to be the best of the Continental laboratories they visited. RSL, MM. 10.93. 

Sometime later in 1869, vanadium metal was isolated from its ores by Henry Enfield Roscoe (1833—1915), but Sefstrom had already received credit for the discovery of the element vanadium. 

Sir Edward (T. E.) Thorpe, 1845-1925. English chemist famous for his research on the specific volumes of liquids in relation to their chemical constitution, and for his work on the oxides of phosphorus and the compounds of vanadium done in collaboration with Sir Henry Roscoe. Author of excellent textbooks of chemistry and of biographies and essays in historical chemistry. 

The final step in the discovery of vanadium was accomplished by the English chemist, Sir Henry Enfield Roscoe, who was bom in London on January 7, 1833. When he was nine years old the family moved to... 

Sir Henry Enfield Roscoe, 1833-1915. Professor of Chemistry at the University of Manchester. Collaborator with Bunsen in researches in photochemistry. Author of excellent textbooks and treatises on pure and applied chemistry. 

From Thorpe s The Right Honourable Sir Henry Enfield Roscoe ... 

While studying at Heidelberg, Sir Edward Thorpe read in a French periodical on popular science that the Copley Medal had been awarded to Sir Henry E. Roscoe. His letter of congratulation brought the following reply ... 

After enjoying a serene old age, Sir Henry E. Roscoe died suddenly on December 18, 1915, during an attack of angina pectoris. 

Lithium in Natural Waters. In 1825-26 Berzelius determined the lithium content of several mineral waters from Bohemia and found as much as a centigram of lithium carbonate in every bottle of the water from the Kreuzbrunn Spring at Marienbad (58, 59, 60). One of the first spectroscopic analyses ever made resulted in the detection of lithium in sea water. In a letter to Sir Henry Roscoe written on November 15, 1859, Robert Bunsen mentioned that the spectroscope could be used to determine the chemical composition of the sun and fixed stars. Substances on the earth, he added, can be determined by this method just as easily as on the sun, so that, for example, I have been able to detect lithium in twenty grams of sea water (61). 

Sir Henry E. Roscoe stated in his Spectrum Analysis So long ago as 1752, Thomas Melvill [or Melville], while experimenting on certain coloured flames, observed the yellow soda flame, although he was unacquainted with its cause (63, 64). 

Bunsen afterward carried out an elaborate series of photochemical researches with his lifelong friend, Sir Henry Roscoe, but suddenly discontinued this work. The reason for this may best be told in his own words as quoted from his letter to Roscoe written on November 15, 1859 ( 7) ... 

London, 1901, pp 530-2 Bunsen Memorial Lecture by Sm Henry Roscoe. 

Birth of Sir Henry E. Roscoe, the first to liberate metallic vanadium. 

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