320 Wisconsin Academy of Sciences, Arts, and Letters. 
Creans diem hodie creatur in die. 
Nascitur mtmdo oriens prophets, quern uocauit Emanuel,, 
nobiscum Dews. 
QUIBWS FINITIS INCIPlTWr MISSA IN CHOROI DOinWU S DIXIT 
AD ME. KYRIEL CySOU CUm GLOfTIA IN EXCELSIS DE Be&TA vir- 
GIWE. PrOPHe^IA ET EPis^OEA LEGANTWT COWTINUATim. SE- 
queNtia: Grates nunc omnes. credo in UNum DEum mcatun. 
PreFAcio DE NttTmiTATE CUmi COmmWNICANTIBWS, ET C071CLUD- 
AT Ur MISSA cum BCNCDICAMWS DOm^NO. S ed AD ALIAS DUAS 
missas mcatun : Ite missa est. finita missa in gallicantu 
LEG a^wR nuangeliuM: liber GUNerAcioNis. 
quo finito, iocuwda uoce mciPiATi^r hec ANtiphona: 
O muwdi Domiim regia, ex semiwe orta, ex tuo tarn X.pistus 
processit aluo tamqwam sponsus de thalamio. Hie iacet in p re- 
sepio qui et sydera regit. 
postea eowTiNUATim mcatun illa an tiphona: 
Completi sunt dies Marie ut pareret filium suum pWmogeni- 
tum. 
y ersus: Post partum Virgo. onatio: Deus qui per Beate Marie. 
postea sEQuiTwr: Te Deum laudamus. 
versus: Benedicts qui uenit in nomine Domini. 1 
This text is striking evidence of the freedom with which, in 
the later Middle Ages, interpolations were admitted at the end 
of Christmas Matins. In the present instance a processional 
trope is inserted after the ninth responsory, and the first Mass 
is followed by two intrusive antiphons. The content of these 
interpolations seems to suggest the presence of an actual Christ¬ 
mas Crib (preesepe) , 2 the structure about which the dramatic 
Officium Pastorum developed in this part of the Christmas 
3 Followed immediately by the rubric: Laudes. For the liturgical 
setting of this text, see the general outline of Matins printed 
above, and the complete texts of Christmas Matins printed in 
Appendices A and B. For a text somewhat similar to that printed 
here see Rouen, Bibl. de la Vi lie 1 , Ms. 211 (A. 145), Brev. Gemmeticense 
saec. xii, fol. 30r-30 v . In this text the antiphon 0 mundi Domina is 
written under the rubric Ad Processionem. 
2 Note’ such a clause as Hie iacet in presepio. Concerning the 
Preesepe see below pp. 334 ff. 
