Your request goes back a while but I noticed there was no answer. I happen to have this information in my files. The act can be found on the Family Search website in the Quebec Non-Catholic parish registers section (Sorel, Church of England in Canada).
It reads as follows :
Baptised this twenty seventh day of September One thousand eight hundred and twelve Catherine Daughter of John Burhart Farmer at Pot à Beurre & of Catherine his wife - born on the twentieth Inst. The sponsors were Catherine Allen, Mary Lowe & Aaron Allen all of this place.
The mark of John Burhart X
The mark of Catherine Allen Godmother X
Catherine Nelson proxy for Mary Low Godmother
Catherine (the wife) was Catherine Plass not Ploss. She was the daughter of Peter Plass (whose name is often frenchified into Pierre Plasse in some documents), a Loyalist soldier of German descent from New York state who settled near Sorel after the Independence War, and of Marie Anne Lefort (my 4th greatgrandfather’s sister). As you can see I am not directly related to John Burhart, but I have his marriage act as well as some data on the Plasses and the Leforts, if you are interested.
Marie José R.