Reports & Proceedings — Mineralogical Society. 431 



IRIEIE'OIRTS J±1<TJD IFIROOIEEIDIISra-S- 



Mineralogical Society. 

 Jane 19. — W. Barlow, E.P.S., President, in the Chair. 



Dr. G. F. Herbert Smith: On the Problem of Sartorite. The 

 examination of crystals kindhf supplied for the purpose by Dr. C. 0. 

 Trechmann and Mr. P. H. Solly showed that the faces fall into 

 zones which are only partially congruent. Just as in the case of 

 calaverite earlier investigated by the author, there appear to be 

 simultaneously in certain of the crystals five distinct lattices. The 

 vertical spacing and the relative positions of the vertical planes 

 remain unchanged, but in passing from the central lattice to the two 

 lying on either side there is a distinct shear which varies in direction, 

 though apparently not in amount, from crystal to crystal. 



Dr. A. Scott: Note on a Curious Case of Devitrification. The 

 glass of an old bottle found in river sand about four feet below the 

 surface in Leven Shipyard, Dumbarton, has become almost com- 

 pletely crystallized. The crystals, which have a composition 

 corresponding nearly to 2CaO . Na 2 . 5SiC>2, are accompanied by 

 some dark-coloured microlites. A. piece of a glass which by accident 

 had been allowed to cool slowly showed the same crystals and 

 microlites, and in addition a few small needles with high refraction 

 and large birefringence. 



Dr. Gr. T. Prior: The Meteorites of Simondium, Eagle Station, 

 and Amana. The results of analyses showed that the Amana stone 

 belonged to the cronstadt, with some approach to the baroti type ; 

 that Eagle Station is an exception to other pallasites in containing 

 iron richer in nickel and olivine correspondingly richer in ferrous 

 oxide ; and that Simondium was closer to the grahamites than to the 

 howardites, since like other grahamites it contained nickeliferous 

 iron and olivine in chemical composition similar to those of the 

 pallasites, but with pyroxene and auorthic felspar similar to those of 

 • the howardites and eucrites. 



COIR. RES^OZCsT IDE! ISTOIE. 



FROM THE FRONT. 



Dear Dr. Woodward, — I have by no means forgotten your kind 

 letters, but I have not been in a position to write to you of late. The 

 business in the Artillery line has been far too brisk to allow me quiet 

 to get any correspondence done. Fortunately for me, the other 

 night I did not retire to rest at my usual time, for my " dug-out" 

 fell in and buried my " kit " under 8 foot of earth, so I cannot 

 grumble at my luck, even though I have been out here now nine 

 months without any leave. 



Strangely enough, the fall of my "dug-out" brought out a rather 

 interesting little geological section : a pocket of chalk about a foot in 

 greatest diameter, with streaks running out of it for about 2 feet in 

 one direction only, was exposed in the sandy cliff, though the solid 

 chalk below had still another 15 feet of sand separating it from this 

 pocket. The other day also I came across the finest illustration of 



