174 



Scientific Intelligence. 



The variation of the angles for 80° Reaum. was 



For carbonate of lime, - 8' 344 v 



bitter spar, - - . - 4' 6 " 



bitter spar from the Pfitsch- valley, - - 3' 29 " 



carbonate of iron, - - - - 2' 22 " 



In the sulphate of lime the variation of the inclination of the faces/ and 

 f Fig. 57 second volume of Moll's Treatise on Mineralogy, is = 10' 50", 



of the faces I and I' = 8' 25", of the edge ff to edge 1 1 = T 26". All 



three angles become more obtuse. 



14. Analysis of the Honey stone or Mellite. — Dr Wohler has found this 

 mineral to consist of 



Mellitic acid, 41.4 



Alumina, 14.5 



Water, 44.1 



100.0 

 Poggendorff's Ann. vii. 330. 



15. Analysis of some varieties of Serpentine. By Mr LYCHNELL,*in 

 Stockholm. — (Poggendorff's Annalen, vol. xi. p. 213.) The analyzed va- 

 rieties are the following: 1. Noble serpentine from Skyttmine, near Fah- 

 lun ; 2. radiated picrolite from the Taberg ; 3. yellow translucent serpen- 

 tine from Sjomine, in Svardsjo ; 4- common serpentine from Sala ; 5. 

 green radiated serpentine from Massachusets ; 6. marmalite from Hoboken, 

 in North America ; 7. pale yellow, and in thin splinters, transparent ser- 

 pentine from Hvittis, in Finland; 8. yellow and translucent "serpentine 

 from Aven, in Norbergs parish ; 9. a pale yellow translucent mineral, cal- 

 led serpentine from Aker. 



The corresponding formulae are the following : For the variet. 1 — 6 : 

 Mg Aq2 + 2 |^ g J S2 ; for the var. 7 and 8 : Mg Aq 2 + 2 -j £ £-S* ; 



