A New Mnicralogical Nomenclature. 33 



Genus 4. Euchroa.* 



H= 1.5—2. G = 3.4— 3.7. 



Sp. 1. E. rubella, Realgar. 



2. E. a urea, Orpiment. 



ORDER XII. THEIINEA. 



Genus 1. Sulphur. 

 Sp. 1. S. pyramidalis, Native Sulphur. 



CLASS III.— HYPOGjEA. 



ORDER I. PITTINEA. 

 Genus 1. Mellis. 



H=2 — 2.5. G=1.5 — 1.6. Transparent — translucent. Color light. 

 Sp. 1. M. pyramidalis, Mellile. 



Genus 2. Succinum. 



H=2 — 2.5. G=l — 1.1. Transparent — translucent. Color light. 



Sp. 1. S. Electrum, Amber. 



Genus 3. STEATUS.t 



G=0.65. Whitish. Crystalline. 



Sp. 1. S. acicularis, Scheererite. 



Genus 4. Bitumen. 



H=0 — 2.5. G = 0.3 — 1.2. Amorphous. Solid individual* opaqut , m sub 



translucent. 



Sp. 1. B. fragrans, Retinite. 



2. B. flexile, Mineral-Caoutchouci 



3. B. commune, Bitumen. 



* Et>'xpoo$, finely colored. i ^artap,fat. 



VOL. IV. 5 



