[ 26 J 



The SYSTEM of WALLER. Stockholm, 1747. 



I. EARTHS. 



1. Dry, 



Soil. 

 Chalk. 



2. Greajy, . 

 Clay. 

 Marl. 



3. Minerals, 

 Sa'ine. 

 Sulphureous. 

 Metallic. 



4. Arenaceous. 

 Sand. 

 Gravel. 

 Metallic. 

 Animal. 



II. STONES. 



1, Calcareous, 

 Lime-ftoDc. 

 Marble. 

 Gypfum. 

 Spar. 



2. Vifrejcent. 

 Fiilile. 

 Sand-ftone. 

 Flint 



Petrofilex. 

 Quartz. 

 Cryftal. 



He firfl determined rightly the fpecies in this kingdom. 



He refolved in a beautiful manner the analyfis of ftones. 



He who underftands the fulphurepus exhalations of mountains, and 

 comprehends the matrices of metals, will not want a key to the 

 generation of metals, 224. 



Terreftrial mephitis he confiders the father of falts, 181. 



He admits that primeval (tones fometimes occur among others, viz. 

 Jafper, loi. Species of Qiiartz, 106. Mica, 132. 



