6 Travels. 



Austria, Italy, Franco, and southern England. On this 

 tour he visited mines, the great collections of minerals 

 to be found in the capitals of the different countries, and 

 formed numerous acquaintances with eminent scientists. 

 During the winter of 1826-27 he stayed at Berlin, where 

 his life-long friendship with the Eoses and Mitscherlich 

 commenced. 



In 1827 Haidinger returned to his native country, and 

 settled in Elbogen, Bohemia, where he remained for 

 thirteen years at the head of a porcelain factory owned' 

 by himself and his brothers Eugene and Rudolphe. The 

 products of this factory were repeatedly rewarded with 

 gold and silver medals at different exhibitions, indicating 

 that Haidinger understood well to apply some of his 

 mineralogical knowledge to practical purposes. 



But during this long sojourn at Elbogen, Haidinger 

 continued his original investigations. The transactions 

 of the Bohemian Society of Sciences, at Prague, the 

 Annalen of Poggendorff, of Berlin, the Zeitschrift fur 

 Physik of Ettingshausen and Baumgartner, of Vienna, 

 contain valuable contributions from Haidinger during 

 this time. A very important contribution which min- 

 eralogical literature owes to Haidinger at Elbogen, is his 

 " Anfangsgriinde der Mineralogie" (1829), which was 

 originally published in England, by request of the editors 

 of the Library of Useful Knowledge. This book 

 (312 pp. 8vo, with 15 plates) seems, so far, to have been 

 rather overlooked by Haidinger's biographers, probably 

 because it contains no new contributions to the science 

 of mineralogy ; but its method is so excellent that it 

 must have exerted a powerful influence on the study of 

 mineralogy both in England and in Germany. The 

 book consists essentially of three parts : a concise treat- 

 ise of physical mineralogy, a compact exposition of the 

 characteristics of all the mineral species, and a more full 

 description of the most important minerals. In short, 



