600 [Proc. B.N.f.C. 



from the rude herring-bone masonry of the Saxon period to 

 the lavish richness of the Tudor times. Special attention was 

 directed to the remarkable windows of this church, which to 

 see, even on a screen, is to admire. It is said " no architectural 

 feature claims more general attention than the window, be it 

 the humble casement of the cabin, the cosy dormer of the cot- 

 tage, with its flood of cheery sunshine ; up to the riants of the 

 Minster, in their majesty and all their treasures of artistic glass 

 — these are the things which, from the interior, catch the eye, 

 and, if the proportion is defective, we weary at once of all 

 minor details, and forget them, but one never forgets those of 

 York. 



Mr. Fennell gave a well-illustrated description of the win- 

 dows known as " The Heart of British Oak," the " Five Sisters 

 of York," and the " Great Wall of Glass." 



The election of some new members brought the lecture to a 

 close. 



ig February. 

 H. J. SEYMOUR, F.G.S.— " THE MICROSCOPICAL 

 MINERALS OCCURRING IN SANDS." 

 The paper was confined chiefly to the examination of sands 

 for mineral constituents, which still possess their original cry- 

 stalline outlines, and hence may be recognisable to a beginner 

 with little or no knowledge of the science of mineralogy. The 

 classes recommended for study were sea sands, river gravels, 

 and decomposed rock material occurring in rock masses. By 

 means cf lantern slides the best types of localities for collecting 

 were indicated. On the sea shore it was pointed out that the 

 most suitable material for research was the " black sands " which 

 occur in pa'ches on shores of the velvet sand type, and which, 

 consisting chiefly of magnetite, often contained other heavy 

 minerals, many of them of considerable interest. Mr. Seymour 

 described the best method of collecting the material for ex- 

 amination, and the various precautions to be observed so as to 



