How to you clean adhesive from hardwood floors?

I removed old tiles from my kitchen floor and underneath is a beautiful wood floor. However, there is some type of black adhesive that was used to adhere the original tiling. It almost looks like tar. The house is over 100 years old and I have no idea exactly what this black adhesive is. Please help:)How to you clean adhesive from hardwood floors?
That black adhesive is glue from the tile. My grandfather use to do tile work and lay carpet. When I took up a tile floor with the black glue from the tile we had to scrape it up. MY suggestion find a store or someone who does this kind of work and call them and see what to do. They may have a way now days to get the glue up. You might try a local janitorial supply store they may have an ideaHow to you clean adhesive from hardwood floors?
Try a product such as goo-gone. Just be sure the area you are working in is well ventilated, as the fumes are VERY strong. After you rub away the goo, wash with warm soapy water immediately so you don't harm the wood.