Floors coming out

So, I've been pulling up floors in the north 1/3 of the house. One board at a time.

Here's a view of the main beam. To the left you can see discoloration. The beam is 3 2x8s. It takes a downward turn just left of the brick support in the middle of the photo.

Next we see a close-up fo the main beam. I'm debating weather to disect the beam and reconstruct it or to just support this end and work with what is there (I'm leaning toward reconstruction). This is further demonstration of wood placed in a moist environment for many years.

Here is shot to show you what the "Business end" of the house is looking like at this point.