Gregofacsimil + neumes from H + rsigns according to H. BR has "credideris" in the R/, and "credis" in the V/. H has "credis" in the R/, and a different V/ that has not "credis". The semantic progression from "credideris" to "credis" in BR should be adhered to => modified the R/ text to that end following FCo2, which alone has this variant (not Vat.8737). Verse structure from Vat.8737, with standard melody and rsigns.

Backported dcrochu's changes but kept the Roman text

• Texte de Hartker • NABC : "si creDIS" toM1 --> to : ici, la forme du torculus n'est pas mélodiquement significative et tient plus, dans cette partie du ms, d'une habitude d'écriture

• retouche mélodique du V/ à "Laurentius HIPpolyto"

• NABC : correction d'erreur à "HIPpolyto"