Uiznes of flow when they sources torrn/ oo rectangular parodied/)grams y whose; diagonals make; 
are angle/ of ^3 The/ unbrokens hnes ceres lines of Slow where sources of the; some sign 
a/re; diaryonadly opposite/. One line sinks to as circles, another to as reetangular hyper « 
loin. , the/ rest a/re lemmscates. When as source and smlc. a/re/ -transposed/ the circles 
is still; pant- of a/ siren/mi whose/ other li'o/nchi zs a/ straight hue. , hut the lemmscaztes 
pars over win the Jutted curves. 
over 
