1 Introduction  
2 Basic Properties of Flow Polynomials  
3 Real Zeros of Chromatic Polynomials  
4 Zero-Free Intervals Within (1,2) for Flow Polynomials  
5 Zero-Free Intervals Within (2,3)  
6 Multiplicity of the Flow Root at 2  
7 Flow Roots Larger Than 4  
8 Graphs with Real Flow Roots Only