4*74 Canadian Record of Science. 



H. M. Ami at Perkins Mills, Templeton, Ottawa Co., Que- 

 bec, though riot of very large size, (about \ in. diameter) 

 are remarkable for their perfection, and brilliancy of lustre. 

 They exhibit the faces of the cube and octahedron (go 0,0) 

 the former being more extensively developed than the 

 latter. 



5. Martite. 



Mr. A. M. Campbell of Perth, Ont., sent mo some octahe- 

 dral crystals from the Dalhousie Iron Mine, on lot 1, range 

 4 of the township of Dalhousie, Lanark Co., Ontario. 



They proved, on examination, to consist of magnetite, 

 partially, and in a few cases, completely, altered to hematite, 

 though still retaining the sharp outlines of the original 

 octahedrons of magnetite. 



The crystals in which the alteration is complete may 

 properly be referred to Martite, defined by Breithaupt as 

 sesquioxide of iron occurring under an isometric form. 



The completely altered crystals are not magnetic or only 

 very feebly so. 



Some of them are an inch and more in diameter. 

 Specimens which have been exposed to the weather are 

 externally of a bright brick-red color. 



6. Kermesite. . 



Occurs in small radiating tufts of capillary crystals on 

 stibnite from Eawdon, Hants Co., K"ova Scotia, and exhi- 

 bits all the ordinary characters of the species. 



It results no doubt from the alteration of the stibnite. 



Mr. C. W. Willimott first called my attention some time 

 ago to its occurrence at this locality. 



7. Quartz. 



Of this familiar mineral some good crystals have lately 

 been brought to light. Mr. A. P. Low, during the past 

 summer found transparent crystals in a red pegmatite at 

 Lac aux lies, Portneuf Co., Quebec, which shew the com- 



