22 A New Mineralogical Nomenclature. 



ORDER IV. OSMERINEA. 

 Genus 1. Hydro lus.* 



H=l— 3.5. G = 1.4— 2.1. Fusion difficult— infusible. 



Sp. 1. H. cerinus,t Halloylite. 



2. H. argilliformis, Kollyrite. 



3. H. adherens, Scarbroite. 



4. H. pyrosmicus,{ Pyrargillite. 



5. H. Gibbsianus, llihbsUe. 



6. H. tincius, Allophane. 



Genus 2. Oi>hitis.§ 

 H=2— 4. G=2.5— 29. 



Sp. 1. O. communis, Serpentine* 



2. O. figularis, ' Agalmatolite. 



3. O. reniformis, Kerolite. 



Genus 3. Stylus. || 



H = 2 — 3. G = 2.G. — 2.8. In prisms nf six or tireh-c sides. 



Sp. 1. S. hexagonus, Finite. 



2. S. acrotomus, Fuhktnite. 



Genus 4. Nematus.^ 



H=2— 3. G =2.3— 2.7. Delicately columnar. 



Sp. 1. N. rectangulus, Picrosmino. 



2. N. scopiformis, Osmelite. 



3. N. gracilis, Nemalite. 



Genus 5. Maroahitus.** 



11 = 1.5—3. G=2— 3.1. Lamellar. 



Sp. 1. M. Magncsicus, Native, Magnesia. 



2. M. saponaccus, Talc. 



* YiJt.ip, water ; refers to the large proportion of water in the 6pccies. 

 t Waxij, in allusion to its lustre. 

 t nop, fire, and nop), odor. 



() An old name of serpentine, derivod from the Greek, tyiS, a snake. 

 II EriXos, a column, in allusion to the hexagonally prismatic forms presented 

 by the species. 



IT Nilyu, a thread ; refers to the columnar structure of tho species. 

 ** Mapy.ipcnis, pearl ; alludes to the lustre. 



