PISA XSL: 
Fic. 1. Diorite-porphyrite, coarse grained. The hornblende is represented by 
heavy shading; the feldspar is lightly shaded. An attempt is also 
made to represent the zonal structure and decayed cores of the 
phenocrysts. The quartz is unshaded and the magnetite is dead 
black. Spec. 608. >< 37 diam. 
Fic. 2. Diorite-porphyrite, fine-grained. The shading is the same as in Fig. 1; 
it shows in addition a well marked flow-structure, and quartz as 
phenocryst; the quartz in the groundmass is not represented, nor 
are the feldspar individuals distinguished. > 30 diam. 
