Gemma - excerpts from the Missale Scarense (old Swedish)

http://www.youtube.com/watch?v=I4EJuqYvR3Q

Lyrics request :

There is more info about it in the video info and comments.
It generally says that the lyrics are taken from the medieval Swedish manuscript, Missale Scarense (Skaramissalet).
I can't find neither the lyrics nor the original manuscript online (only to buy - not interested )

Thanks