M. Scheerer's Observations on Elccolith and Nepheline. 1 05 



Lazulite. 



Soda 9*09 



Lime 3-52 



Alumina .... 31*76 



Silica 45-50 



Sulphuric acid . 5 "8 9 



Sulphur .... 0-95 



Iron 0*86 



Chlorine .... 0*42 



Water 0*12 



98-U 



Artificial Ultramarine. 



Soda 21-476 



Potash .... 1-752 



Lime 0*021 



Alumina . . . 23*304 



Silica 45-604 



Sulphuric acid 3*830 



Sulphur . . . 1-G88 



Iron 1-063 



Chlorine ... a trace 



TWO ANALYSES OF GMELINITE FROM GLENARM, SP. GR. 2*06 

 AT 12° C. BY M. CARL RAMMELSBERG. 



[From Poggendorff's Annalen, B. xlix.] 

 Oxygen. 



. 46-398 24-10 46*564 



. 21-085 9-84 20*186 



. 3-672 1-03 3*895 



. 7-295 1-86 7*094 



. 1-604 0-27 1*873 



. 20*412 18*14 20*412 



Hence the quantities of oxygen contained in the alkaline 

 bases, including the lime, the alumina, the water and the 

 silica, are as the numbers 1, 3, 6, 8, as in most Chabasies. 

 The chemical distinction between the two minerals appears 

 to consist in the relative quantities of lime and soda contained 

 in them, most lime being contained in Chabasie. Gmelinite 

 forms a jelly with hydrochloric acid, Chabasie does not. 







Oxygen. 





Oxygen 



Silica . . 



, . 46-398 



24-10 



46-564 



24*19 



Alumina 



. 21-085 



9*84 



20*186 



9-43 



Lime . . 



. . 3-672 



1-03 



3*895 



1-09 



Soda . . 



. 7*295 



1-86 



7*094 



1-81 



Potash . 



. 1-604 



0-27 



1-873 



0*31 



Water . 



. 20-412 



18-14 



20-412 



18*14 



XVII. Observations on Elasolith and Nepheline. By Theo- 

 dore Scheerer.* 



IN the 46th volume of Poggendorff's Annalen, p. 291, I 

 communicated a notice on an elseolith which is found near 

 Brevig in Norway. I considered myself justified, from the 

 results of the analyses made with U, in advancing a new for- 

 mula for this mineral, which seems to be more in harmony 

 with its composition than the one hitherto employed. I had 



* Communicated by the Author. 



