i9o6] TRAVIS— PYRITE FROM CORNWALL. 137 



The diploids (531), (321), (753). (432) and (14.11.8) in the 

 zone (121) between (210) and (m) were definitely observed on 

 only two crystals, Nos. 11 and 15. 



(53i)> observed on crystal 11 as one face about 0.5 mm. wide by 

 i.o mm. long. 



Measured 28° 38' (signal good) 



Calculated 28° 34' 



(321), observed on the same crystal as a comparatively large 

 face, I mm. by i mm. 



32I/\III. 



Measured 22° 18' (signal brilliant and 



Calculated 22° 12^' good) 



(753) > a new face for pyrite, was observed on crystal 15 only. 

 The face is about 0.5 by 0.2 mm., and is quite good and bright. 



753AI"- 



Measured 18° 05' (signal good) 



Calculated 18° 5^' 



(432) was definitely observed on crystal 11. It appears as a 

 narrow face, somewhat rounded, about o.i mm. wide, being less 

 than half the width of the face (14.11.8) occurring in the same zone. 



432A111. 



Measured 15° 11' (signal rather bright but 



Calculated 15° 13^'. poor) 



(14.11.8) appears as a good, brilliant face about 0.3 mm. wide, on 

 crystal 11. 



J4.II.8AIII. 



Measured 12° 32' (signal bright and fairly- 

 Calculated 12° 32' good) 



(14.9.3), a new form for pyrite, occurs as a good face about 0.5 

 mm. wide on crystal 11. Its symbol was determined from measure- 

 ment to two adjacent faces, as follows, — 



14.9.3A111. I4.9-3A22I. 



Measured 15° 01' 27° 28' (signal bright and good) 



Calculated 15° 01' 27" 26' 



(542), a new form for pyrite, was observed on crystals 6, 11, 

 and 15. In each case the face was small but bright. 



542/\iii. p 



Measured 33° 55' 21° 16' (No. 6; signal faint but 



Calculated 33° 57' 21° 03' good) 



