The 1876 text uses the Saxon letterforms:
Meꞃecenꞃÿke, ꞃÿk, meꞃcen
At the time of preparation (June 2009), Saxon letters had been assigned Unicode values, but font support was extremely limited. Your browser will probably not be able to display the character.
[B.] Similarly for Greek Χρ (Chi, rho):
placinge ther xþemas (Christmasse) a parte of this tyme of Nowell .... ante xþi (Christi) natalitia viginti aut triginta dies quodam desiderio.
The 1876 text gives only the expanded (Roman script) form of words in Chr-.