312 
Proceedings of the Royal Society 
4. Obituary Notice of Gustav Rose. By Professor 
Crum Brown. 
Gustave Rose was born in Berlin on the 18th of March 1798. 
He was the youngest son of the pharmaceutical chemist, Valentin 
Rose, and the brother of Heinrich Rose, the eminent analytical 
chemist. He intended to devote himself to mining engineering, 
and began his practical studies in Silesia; but in consequence of 
illness gave up this profession, and occupied himself with scientific 
chemistry and mineralogy. He studied mineralogy under Weiss, 
in the University of Berlin, and made a large number of careful 
measurements of crystals. His first published work was his gradu- 
ation thesis, “De Sphenis atque Titanitae systemate Crystallino,” 
1820. 
Like many young chemists of his time, he was attracted to 
Stockholm, where he studied under the guidance of Berzelius, the 
greatest and most, accurate chemist of that age, and by frequent 
excursions in Sweden made himself thoroughly acquainted with 
the varied mineralogy of that country. In Stockholm he met 
Mitscherlich, with whom he maintained a life-long friendship. 
Late in life he felt it necessery for him to explain, which he did 
in a friendly and modest way, the share he had in the work which 
led to Mitscherlich ’s discovery of isomorphism. In 1823 he be- 
came lecturer on mineralogy in the University of Berlin; in 1826 
he received the title of extraordinary Professor ; and in 1849 was 
appointed ordinary Professor of Mineralogy and Director of the 
Mineralogical Collections. 
Rose travelled much in search of mineralogical knowledge. He 
visited England, Scotland, Scandinavia, Italy, and France, studying 
rocks, mines, and museums; and in 1829 was selected by Humboldt 
as one of his companions in his examination of the Ural and Altai 
Mountains. There Rose discovered many new minerals, and in a 
special work, “ Reise nach dem Ural,” 1837 and 1842, made known 
the remarkable mineral wealth of that part of the Russian empire. 
His holidays were usually occupied by excursions in Silesia or in the 
Harz, where he collected the materials for some of his most valu- 
able investigations. During one of his walks in Silesia he sustained 
an injury of the knee, from which he suffered much, but continued 
