Concussum est mare et contremuit

Folio: 
108r
Sequence: 
17
Feast: 
Office/Mass: 
N
Genre: 
A
Cantus ID: 
001864
Mode: 
8
Differentia: 
?
Manuscript Reading Full Text (standardized spelling): 
Concussum est mare et contremuit terra ubi archangelus Michael descendebat de caelo