VOL. I. PLATE V. 



rp 



FIG. 25. P. A tetrahedral trigonal-icosite- 



. .,, trahedron. 

 fy a 



T 



FIG. 26. ?. The same, in inverse position. 



tj" 



Tn 



FIG. 27. r . A trigrammic tetragonal-icosi- 



., ,,, tetrahedron. 

 F, r 



rp 



FIG. 28. .". The same, in inverse position. 

 t H" 



rp 



FIG. 29. r Ji. A right pentagonal-icositetra- 

 . ., hedron. 



rp 



FIG. 30. /__!?. A left pentagonal-icositetrahe- 

 2 in , 



. ,, dron. 



