48 S. KOZU 
From the norms, ratios are given as below. 
oe a (atsa ontasa ec kateh Moai ae eM MON a MeO hei 14.09 25.41 25.11 
: CD aap Wontar orca Nia Gaui NFS 0.37 0.33 0.27 
ee Pcs ee OES RAO a Ao oe 24.4 x 
we I pears GARR S Sellay Mead entte ey Nettles i) II.20 32.75 
The magmatic name of the rock from Manzoyama is lebachose, 
in which division only a few rock-analyses are so far known to 
belong. On account of the richness in potash, the writer dis- 
tinguishes the rock as potash-rhyolite. 
