A few bare spots in old finish

Q: We own a 116 year old Victorian home and our large dining room area has an original pine wood floor. Since we have lived here for only two years, we have never refinished this floor. The problem is that lately, in quite a few spots, the finish has peeled and cracked.

This has left bare spots that are actually deeper than the rest of the wood. Can we repair just these spots and then finish the whole floor? What are the steps taken to fix this?

A: For some areas I have used a polyurethane adhesive in a squeeze bottle. There is also a robust wood filler called Timbermate which could be used. www.timbermate.com