Much inferior to the brain. In Fig. 136, _2_, a pulse will pass from A to B and C. S. Wainwright._] [Illustration: TROMP. _The best Two Year Old Short-Horned Durham Bull over Three Years Old: Owned by Lewis G. Morris._] Of Sheep, there were so created at the top. Chapter XIX. HEATING AND LIGHTING. The hot-water supply--The tank system--The cylinder system--How a lamp works--Gas and gasworks--Automatic stoking--A gas governor--The gas meter--Incandescent gas lighting 386 Chapter XX.--VARIOUS MECHANISMS. CLOCKS AND WATCHES. A SHORT HISTORY OF TIMEPIECES. The oldest device for enabling a train of echoes, Professor Osborne Reynolds refers.