A 
Z/ines of flow when/ fhes sources forms ou rectangular parallelograms^ whose/ diagonals mnJces 
am angles of -jr Thes unbroken/ times ares times of flow when sources of the; sanoc signs 
ares Ifogonallp opposites . Ones times smlcs to as circles another to as rectangular hpper= 
loins, four rest arc timrus castes . Whens at sources and smlcs are t Iransposeati the circlet 
is stills parts of at streams' whoses other Iramchy is as straight tin es^ huts the le/oruseatcs 
pass over in to that dotted curves. 
