The answer is CORNSTARCH The corresponding square is house puzzle by Roger Barkan The Path of the Argo by Roger Barkan This is a typical pathfinder grid, ala GAMES magazine, where an answer starts on its number going in a certain direction, and can make as many north, east, south, and west turns as it likes. Classically, each letter is used by exactly two answers. In this grid, there is one unclued entry, thus the letters in it are only used once. They spell out CORNSTARCH (of which Argo is the most common brand). -TFISOVEEM- -S-D-L-L-O- DELECORODRY I-I-C-N-R-R SROPITSCAPE -E-S-A-R-A- THMOCRBAPPY O-E-H-O-I-A YADOOTNSANW -N-T-H-T-I- -ITEREDOGN- The letters that are only used once spell out CORNSTARCH. 1: FIDELIO 2: SIFTS 3: VELODROME 4: EMORY 5: LOVELORN 6: DRAPERY 7: ID EST 8: PICCOLOS 9: SCRAP PAPER 10N: SPOILED 10S: SOMEDAY 11: APPIAN WAY 12E: BAR CAR 12S: BONSAI 13: YAWNING 14: OTHERSIDE 15: HOOTER 16: ON THE DOT 17: DEMOCRATIC 18: NITER 19: TOOTHED 20: INGOTS 21: TINA YOTHERS