Crystals. 131 



The magnetic and electric properties of crystals, and their relations 

 to heat, all shew the same intimate connection and dependence on 

 their crystalline form observed in the case of their optic properties. 



For fuller details of the subject treated of in this paper I would refer 

 you to the many excellent text-books of mineralogy, and to the articles 

 treating of the various divisions of the subject in the encyclopaedias. A 

 most excellent little work is that by Mr. Fletcher of the British Museum, 

 from which I have freely quoted. 



In conclusion I would call your attention to the (act that we 

 Canadians have in our own country a vast unexplored field of research 

 in crystallography. Canada has afforded the most magnificent crystals 

 of many mineral species, which the world has ever seen. I need only 

 mention the superb and unrivaled crystals of zircon, apatite, 

 phlogopite, sphene tScc. which grace the museums of Europe and this 

 continent. 



Many of our localities present unusually favorable conditions for 

 studying the mode of formation of the various crystallized minerals, and 

 if my remarks this evening awaken in some of my hearers an interest in 

 the fascinating study of the wonderful laws governing structure in 

 inorganic nature, my object will be accomplished. 



CLUB EXCURSION TO PAUGAN FALLS. 



The last Excursion of the season will be held on Saturday, 14th 

 instant, to Paugan Falls, on the Gatineau. The train will leave Llnion 

 Station at 9.45 a.m.; returning, reaching Ottawa at 8.00 p.m. 



This is a new locality to members of the Club, and must prove of 

 great interest, both as a collecting ground, and from its scenic beauty. 



Members will assist the Club by notifying their frtends of the 

 Excursion. 



Rates Members, Adults, 60c. Non-Members, 70c. Children, 

 half-price. 



