l6o ON COLOURING* GEOGNOSTICAL MAPS. 



GREEN COLOURS. 



Rock-salt , and\ 



rocks fromf t>„i , r "ij* • * 



> rale verdigris green. 



which saltV 



springs issue.* 



Salt springs. Dark verdigris green rings. 



Trap-rocks. Blackish-green, inclining to blue. 

 Boundaries of ~| 



countries. J Dark emerald S reen ' 



Talc and Chlo- 1 ~ , 



> rale grass-green. 

 rite-slate. J & & 



Serpentine. Pale pistachio -green. 



Mineral-springs. Pistachio green rings. 



YELLOW COLOURS. 



Sandstone. Straw yellow. 



Iron-clay, and "1 ~ , . 



_ 7 ; J- Pale ochre-yellow. 

 Calamine. J 



Conglomerated p ale orange-yellow, slightly inclin- 

 <mi<* C%-J- ing to reddish-brown. 



stone. 



RED COLOURS. 



Granite. Pale cochineal -red, approaching 



nearly to carmine-red. 

 Topaz-rock. Pale brick- red. 

 Whitestone. Pale flesh-red, 



