Published in Sitzungsberichte der Akademie der Wissenschaften mathematisch-naturwissenschaftliche Klasse, in 1864, in volume 49, pages 431-436

Created: 2017-04-24, modified: 2017-04-24

Published in Annals And Magazine of Natural History, in 1893, in volume 11, pages 360-377

Created: 2011-09-23, modified: 2011-09-23