CREATE TABLE table_26555 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" FLOAT)

Who directed episode number 179 in the series?
SELECT "Directed by" FROM table_26555 WHERE "No. in series" = '179'
SELECT "Directed by" FROM "table_26555" WHERE "No. in series" = '179'