ALLANITE. 571 Constituent Parts. Oxide of Cerium, - 33 9 Oxide of Iron, » - 25.4 Silica, - 35.4 Lime, - 92 Alumina, - 4.1 Moisture, - 4.0 112.0 Thomson, , in Edin. Phil. Trans. vol. . vi. p. 385. Geognostic and Geographic Situations. It occurs in a granite rock in West Greenland, where It was first discovered by Professor Giesecke of Dublin, *^-an intelligent naturalist,—and a gentleman of great worth,—who, with a rare zeal and intrepidity, and in defiance of the horrors and miseries of that forlorn re gion, courageously devoted many years of his life to the investigation of its natural history *. Observations. 1- It was first described and analysed by Dr Tliom- *°n, who named it Allanite, in honour of Thomas Allan, Esq. * One of Mr Giesecke'* collections of minerals was captured during the late war, and brought to Leith, where it wa.: purchased by Colonel Imrie * ntl Mr Allan. A particular account of it has been published in the first Y °lume of Annals of Philosophy by Mr Al|an. The public anxiously expect !>ieaccke's promised account of West Greenland, which, with that of l»th Grccnlonds, announced by a promising navo-ator and naturalist Mr Moresby, will make a valuable addition to our knowledge of these remote “"I hitherto but impel fectly known regions.