At the end of the catalog entry for volume 2 in the FamilySearch scans are some pages with a heading indicating they are volume 3. However, the dates are firmly within the volume 2 time period, and the format does not fit the format used in the actual volume 3 (or the earlier part of volume 2 for that matter). My assumption is the registrar borrowed some pages from somewhere and used them. I have labeled them using the notation "volume 2(B)" rather than "volume 2" to make clear the page numbers have started over from the earlier pages in volume 2.