216 K. jiMBo : 



consists of concentric spherical shells of arsenic. The separate 

 rhombohedra are about 0.4 cm. long, and the diameter of the 

 aggregate is usually less than 4 cm. 



4. Bismuth. 



At Kanagase in Ikuno in Tajima Province we find bismuth 

 filling up interstices of botryoidal quartz-aggregates found in 

 silver ores. 



At OxuEADANi in Obira in Bungo Province, thin lamellae 

 of bismuth are found in the cleavage of a light rosy-coloured 

 fluorite. 



5. Platinum. 



The occurrence of minute black grains of platinum was re- 

 ported by Ishikawa, &c. from the wash-gold of Tunakbets, a 

 tributary of the Sorachi river in Ishikari Province ; and also from 

 that of the upper course of the Yübari river in Iburi Province. 



6. Iridosmium. 



This metal was mentioned by Ishikawa, &c,, in the form of 

 flattened minute grains, found with the above mentioned plati- 

 num. Another locality for iridosmium is the gold placers of 

 the river Yoshinogawa in Shikoku. 



7. Copper. 



Beautiful crystal groups of copper with numerous but hard- 

 ly determinable faces occur in the mines of Osakuzawa and 

 KosAKA in Rikuchü, of Akaka^va in Ugo Province, &c., where 

 irregular, platy, moss-like and other aggregates are also observed 

 with associated cuprite. 



