A solis ortu et occasu

Source: 
The Poissy Antiphonal
Folio: 
008r
Sequence: 
2
Feast: 
Dom. 1 Adventus
Office/Mass: 
M
Genre: 
V
Position: 
02
Cantus ID: 
007305a
Manuscript Reading Full Text (standardized spelling): 
A solis ortu et occasu ab aquilone et mari