Fig. 2. 



found in Scotland. 

 Fig. 3. 



43 



Fig. 4. 



Ficr. 5. 



Orkney Islands. In Pomona, on the 

 shore west of the point of Ness near 

 Stromness, — 



Limnite after cockscomb mar- 

 casite. 



In Hoy, in the cliffs facing Brae- 

 brough, Hoy head, — 



Haematite after pyrites, form P o e, 

 fig. 5. 



Aberdeenshire. At Glen Gairn, along with idocrase and Wol- 

 lastonite (?) — 



Essonite after epidote seemingly, the form being indistinct. 

 Perthshire. At East Tulloch and elsewhere, — 



Limnite after pyrites, forms P and P e, figs. 6 and 7. 

 Fig. 6. Fig. 7. 



The crystals with the form P exhibit beautifully the striae de- 

 pendent on an oscillation between the faces of the cube and pen- 

 tagonal dodecahedron. Fig. 23. 



On the Knock behind Ballantuim 

 Strathardle, — ■ 



Chlorite after garnet, form d, 

 fig. 23. 

 Fifeshire. Near St. Andrews, — 

 Marcasitc after mineral charcoal. 



