The first angel blew his trumpet, and there followed hail and fire, mixed with blood, and it was thrown down on the earth, and a third (triton | τρίτον | nom sg neut) of the earth was burned up, and a third (triton | τρίτον | nom sg neut) of the trees were burned up, and all the green grass was burned up.
Reference
Revelation 8:7
Sequence
28