486 Scientific Intelligence. 
10. Mineralogical Notes ; by E. Cuaassen. (Communicated). 
a 
two parts by a narrow depression. It seems probable that the 
planes of the original crystal, in this and other cases, were met 
and that the concavity and other irregularities observed are due 
to subsequent growth of the crystal over this nucleus. 
2) On Magnetite-crystals in Hematite—Small perfect thas 
of magnetite are found imbedded in a compact hematite 0 
metallic luster, brought from the Lake Superior Iron ae 
on 
Vanadium and Titanium in Magnetite in the nee 
Chaffey ore.—This magnetic .iron occurs near Newboro, Cana 
and contains q, per cent of vanadic acid and 9} per cent of wee 
acid. The vanadie acid was determined in a quantity a sh 
pounds of pulverized and finely bolted ore, and separate a 
barium resp. ammonium vanadate. Era 
11. Phytogeogenesis: Die vorweltliche Entwickelung der 
‘id. vegetation down to a comparatively late period— 
mainly down even to the Tertiary—was aquatic and marine ee 
_ vegetation of the Carboniferous period, the Lepidodendra and othe 
higher cryptogams, formed floating islands of vegetation, 
