Day 4 April 24

All good things must come to an end, but we still have one more excitng stop before we head for home, THE ZOO!

After another good breakfast we'll spend a couple of hours at the National Zoo in downtown Washington.  So many animals to see, and be certain that you see the Giant Pandas

We will make two stops on our way home, one for lunch, the other for dinner, and since we assume that you might be a litttle short on spending money, we will make sure that everyone gets fed.

Dental Drills of the 1800s
  1. Wind-Up Clockwork Drill, 1864
  2. The Pedal Drill (also known as the treadle drill and dental engine)
  3. George Green's Drilling Inventions
  4. Recollections of a Pedal Drill