Starting in 1843, Wesleyan Methodist ministers kept a book of entries for births and baptisms. Each year, they submitted their book to the Conference Office.
Entries were then copied into the General Register, arranged by township, town, village and circuit. The records of the Wesleyan Methodist Church are from 1826 to 1910.
The United Church of Canada Archives who hold copyright on these records, but they have allowed the OGS to transcribe and sell these records through its thirty Branches located throughout Ontario.
To obtain copies of these baptismal record indexes, contact the Branch in the area in which you are doing your family research.
You can go to the list of Branches within the OGS at http://www.ogs.on.ca/branches.php
Postscript: Remember that these are copies of the original baptismal record. It is best if you can get the original record so that you can be sure that there are not any mistakes in transcribing the copies.