LiiliQlocjical Nomenclature. 



245 



cpartzvte), rai-qu'orthoclastyte (tniquorthoclastyte), qu'ortho-mi- 

 catyte (qaorthomicatjte), qua-mic-orthoclastyte (quamicorthoclas- 

 tyte), ortho-mi-quartzyte (orfchomiquartzyte), ortho-qua-micafcyte 

 (orthoquaraicatyte), bi ortho-qaartzyte (biorthoquartzyte), bio- 

 qu'orthoclastyte (bioqaorthoclastj^fce), qu'ortho-biotyte (quortbo- 

 biotyte), qu'ortho-muscovyte (quorthomuscovyte), etc. 



The foregoincr, perbaps, sufficiently illustrate the method of the 

 system, its extreme flexibility, and consequent adaptiveness to the 

 variations of rock combinations, the self-deflnitiveness of the terms, 

 and their monemonic advantages with students, as well as, on the 

 other hand, something of the cumbersome complexity and quaint- 

 ness which will sometimes arise where exact momenclature is 

 attempted. In the following lists no attempt is made to exhibit 

 the complete variation under the several rocks, but simply to give 

 leading names under the two S3''5tems, assuming, usuallv, that the 

 common order of naming the ingredients is that of their relative 

 abundance. The verbal combinations that would arise with other 

 proportions can readily be constructed. 



Class V. Basis of Classification — Mineral Comiposiiion. 



Peesent Names. First Proposed Form. Second Proposed Form. 



Limestone 



Dohjmite 



Quaitzite 



Granite 



Granulite 



Gneiss 



Mica schist 



Hydromica Schist 



Protogine 



Minette 



Greisen 



Felsite 



Limestone, or 



Dolomite 



Quartzite 



Qua-tel-mi, or 



Qu'-orth-mi. 



Ortho qua-mi 



Qu'-ortho-bio 



Qa' ortho-musc 



Urtho-qua-musc, etc 



Fel-qua, or 



Qua-lel 



Foliated felqua-mi 



Foliated fel-rai-qua 



Foliated qua fel mi 



Foliated qua-mi-lel, etc. . . 



Schistose mi-fel-qua, or . . 



Schistose miqua-tel 



Schistose Bydro-mi-qua- ) 



fel, etc S 



Qa'-orth-michlor 



Ortho-bio 



Granular quH-mi 



Felsit 



Calcityte. 



Dilomyte. 



Qnarlzyte. 



JVlilelquarfzyte, or 



Mic-ortlio quartzyte. 



(Vliqu'orthoclastyte. 



Bi-ortho-quarizyte. 



Musc-ortho-quartzyte. 



Musc-qu'orthoclastyte, 



etc. 

 Qua-felsparyte, or 

 Ffclquartzyte. 

 Foliated miqua felsparyle. 

 Foliated quami-f'elsr aryte. 

 Foliated mi-fel-quartzyte. 

 Foliated le;-mi quartzyte, 



etc. 

 Sciiistose quafel-micatyte. 

 Schistose lel-qua-micatyte. 

 Schistose fel-qua-hydromi- 



catyte. 

 Chlor-mic-ortho-quartzyte. 

 Bi-orthoclastyte. 

 Granular mi-quartzyte. . . 

 Felsyte. 



