part of his life his only recreation was a long walk taken late in the evening, 

 in all weathers, throughout the year. He was the first person in all Ger- 

 many who established a class of working pupils. He received them in his 

 private laboratory without fee, providing at his own cost most of the appa- 

 ratus and all the reagents they required. 



He was spared the pain of feeling the approach of bodily and mental 

 infirmity. He lectured in full possession of all his faculties only eight days 

 before his death, and he was confined to his bed only seven days. On the 

 27th of January, 1864, he asked for writing-materials to correct some proof 

 sheets, saying that he felt well, and that he could now leave his bed. That 

 afternoon he died, of inflammation of the lungs. He left behind him a 

 widow, his third wife, and a grandchild, the daughter of Professor Karsten. 

 Her mother, H. Rose's only child, died some years since. 



FRIEDRICH GEORG WILHELM STRUVE was born at Altona on the 

 15th of April, 1793. He was the fourth son of Dr. Jacob Struve, Direc- 

 tor of the High School of Altona. His mother was the daughter of Pas- 

 tor Stinde, Chaplain to Peter III., Emperor of Russia. In order to avoid 

 the French conscription, he went in 1808 to the University of Dorpat, 

 where his elder brother Carl was a Classical Lecturer. At first he devoted 

 himself to Philology, a study in which he delighted to the end of his life. 

 He supported himself partly by private tuition in the family of M. de 

 Berg, and partly on some pecuniary assistance afforded him by the Uni- 

 versity on the recommendation of the elder Parrot, who had discovered 

 Struve's promise of future eminence. In 1811, after taking his first de- 

 gree in Philology, he commenced the study of Astronomy under Huth, 

 who permitted him the free use of the few instruments contained in the 

 Observatory at that time; and in August of that year he verified by obser- 

 vation the conclusions of Sir "William Herschel respecting the angular mo- 

 tion of the two stars composing Cas or. In the autumn of 1813 he took 

 the degree of Doctor of Philosophy, the title of his thesis on that occasion 

 being " De geographica specula Dorpatensis positione." In November 

 1813 he was appointed Extraordinary Professor of Mathematics and 

 Astronomy, and, after the death of Huth, Ordinary Professor, and Director 

 of the Observatory. During the years 1816-19 he surveyed and mapped 

 Livonia at the request of the Economical Society of that Province, the 

 only instrument employed by him in the survey being a 10-inch sextant 

 by Troughton. 



In 18121 the Observatory of Dorpat was supplied with a meridian-circle 

 by Reichenbach and Ertel, and in 1824 with an equatorially mounted re- 

 fractor, of 9 Paris inches aperture and 160 Paris inches focal length, by 

 Fraunhofer. The principal results of the observations made by Struve at 

 Dorpat during the years 1814-1838 are given in the works entitled "Ob- 

 servationes astronomicse institutes in specula Dorpatensi, 18171839," 

 " Catalogus 795 stellarum duplicium, 1822," " Catalogus novus stella- 

 rum duplicium et multiplicium, 1827 " [in the introduction to this 



