Introduction.- Loci Generated By The Point Of A Line Which Moves One End On A Circle And The Other On A Line.- Loci Generated By The Point Of Intersection Of Two Lines.- Loci Generated By The Points On A Line Which Move On Two Concurrent Lines.- Loci Generated By The Points On A Bar Which Slides With The Heads On On Two Fixed Lines.- Loci Generated By Two Segment Lines Bound Between Them.- Problem Of A Locus With Four Intercut Lines.- ＂KAPPA＂ and ＂KIEROID＂ Curves Resulted as Loci.- The ＂Butterfly＂ Locus Type.- Nephroida and Rhodonea as Loci.- Successions Of Aesthetic Rhodonea.- Loci In The Triangle.- Loci Of Points Belonging To A Quadrilateral.- The Locus For The Cross-Point Of The Diagonals In A Pentagon.- Correlation Between Track Generation And Synthesis Of Mechanisms.