1906] 



TRAVIS— PYRITE FROM CORNWALL. 



133 



Fig. 2. Type L Showing trisoctohedrons. 



The observations determining these forms are as follows : . 

 (331) was observed on crystal 2 with two faces in the same zone. 

 The better one is about o.i mm. wide, and gives the measurement 



331 A 221. 



Measured 6° 07' 



Calculated 6° 12^' 



The second face gives a much poorer image, — 



Measured S>2° about ; signal very poor. 



(i I.I 1.4), a new form for pyrite, was observed on crystal 7 with 

 two faces, each about 0.2 mm. wide. 



II. II. 4 /\ III. 



Measured 20° 48' 



Measured 20'' 51' 



Calculated 20° 54' 



(552), a new form for pyrite, was observed on three crystals, 

 numbers 6, 7 and 10. Numbers 7 and 10 afford the best measure- 

 ments. 



