It wasn't the easiest solution but at the bottom of the iPhone iOS8 Photos screen there are two tabs: Photos and Albums. In Albums are Recently Added, Favorites, Videos and Recently Deleted, plus any albums you create. All the photos in these albums are also in Photos. What completely threw me off was that the photos in Recently Added go into Photos in order of the date created.
Four of my Recently Added photos were actually scans from old photos that I had mailed to myself from my Mac. These four photos went into Photos way up in the list, going back months! With over 1400 pictures in Photos, it was very difficult to find the four scans. But they were there.
Once I realized that Photos doesn't operate like the old Camera Roll in iOS7, I was fine. Just a pain to have to go find the old scans.