386 Scientific Intelligence, — Mineralogy. 



21. Ilmenite is Axotornous Iron Glance. — In the January 

 Number of the Annals of Philosophy, M. Levy says Ihnenite is 

 the axotomous iron-glance of Mohs ; more lately Gustave Rpse 

 has come to the same conclusion. He finds the axotomous iron 

 glance to be titaniferous, — a fact which need not surprise us, when 

 it is recollected that iron-glance and titaniferous iron-ore,have the 

 same crystallisation. 



£2. Apatite in Secondary Trap and Trachyte. — Apatite or 

 phosphate of lime, in small crystals, occurs imbedded in the se- 

 condary greenstone of Salisbury Cralgs in this neighbourhood. 

 It has also been found in the trachyte and hornblende of the 

 Eifel in Germany. 



23. Boracic Acid in Mica. — Gmelin, in using the blowpipe 

 test of Dr Turner, for ascertaining the presence of the boracic acid 

 in minerals, has detected it in the lepidolite of Rozna and Uto, 

 in the pinite of the Valley of the Mulda near Penig in Saxony, 

 and in mica of a graphic granite from Siberia. He has also, in 

 the moist way, found boracic acid in a silver white mica from 

 Fahlun. The proportion in lepidolite appears about 4 per 

 cent. 



24. Curved Lamellar Heavy Spar, a new Species. — This mi- 

 neral, as it occurs in the Freyberg mining district, according 

 to Breithaupt, has a specific gravity of 4.02 — 4.29, whereas that 

 of true heavy spar is 4.30 — 4.58 ; further, it is a compound of 

 sulphate of barytes and sulphate of lime. It decays more readily 

 than straight lamellar heavy spar, owing to the anhydrous sul- 

 phate of lime passing on exposure into gypsum. He names 

 it calcareous heavy spar, 



25. Fiuo7ic Acid in Felspar. — The genus felspar, according 

 to Breithaupt, contains at least seven well marked species, viz. 

 petalite, perikline, orthoklas, tetartine, oligoklas, Labrador, and 

 anorthite. All the species have been found to contain fluoric 

 acid. 



BOTANY. 



26. Botany of' the Dutch East India Possessions. — The cele- 

 brated Dutch Naturalist, Dr Blume, has lately arrived in Europe, 

 after a residence in Java of nine years. He has brought with 

 him an immense collection of objects of Natural History, and in- 

 tends publishing an extensive work on the botany of the Dutch 



