Obituary — Dr. Ernst von Reheur-Pasclmitz. 575 ■ 



Tertiary times in Western Europe. This name was originated by 

 Diimont for the white sands, without fossils, wliich appear in the 

 Bolderberg, near Hassalt. We can observe these sands, in places, 

 on the banks of the Rhine, where they contain fossils, and are classed 

 as Upper Oligocene. The Miocene of Belgium is the Crag noir 

 d'Anvers, part of the Diestien of Dumont, the Ativersien of Cogels 

 and Van Ertborn. 



Lately, M. E. Van den Broeck has endeavoured to demonstrate on 

 the evidence of fossils found in the upper beds of the Bolderien at 

 Waenrode, that the Bolderien and Anversien are synonymous, and, 

 consequently, that the term Anversien, being newer, must be cancelled. 

 This view, it appears, was adopted by M„ DoUfus ; but I still 

 maintain that this correlation is by no means well founded, and 

 agree with Cogels and others that our ancient Bolderien is Oligocene. 



DR. ERNST VON REBEUR-PASCHWITZ. 



Born August 9th, 1861. Died October 1st, 1895. 



Dr. Ernst von Rebeur-Paschwitz was born on August 9th, 1861, 

 at Frankfurt a. Oden. In consequence of his father's movements as 

 a Government officei". Von Rebeur's school was often changed, but 

 wherever he went his knowledge of mathematics made him in these 

 studies facile princeps. He obtained his doctorate at Berlin, where 

 he became an assistant at the Observatory. At Karlsruhe, where he 

 was ' Erster Assistant,' he commenced, in 1884, to interest himself 

 in Zollner's pendulum. It was about this time that his health first 

 caused anxiety to his friends. Although he visited Switzerland, 

 Italy, Teneriffe, and other places, returning to his home in apparently 

 good health, it was soon recognized that his recoveries were only 

 temporary. At Halle, where he was Privat Docent, the condition of 

 his throat and chest precluded him from giving lectures. From 1891 

 until his death, on October 1st, 1895, he was more or less confined 

 to a bed or sofa, often suffering excruciating pain, and never left his 

 room excepting during the summer. 



It was during this period of physical incapacity that Von Eebeur 

 produced his most remarkable work, and became the pioneer of 

 a new seismology. Commencing with the endeavour to measure 

 lunar gravitation, he discovered the diurnal wave, that earthquakes 

 could be recorded at stations distant more than a quarter of the 

 earth's circumference from their origin, came in contact with the 

 ubiquitous tremors, and observed many other phenomena connected 

 with the movements of our so-called terra firma. These discoveries 

 attracted the attention of other observers, and horizontal pendulums 

 were established at several of the more important observatories in 

 Germany and Russia. 



