CREATE TABLE table_19860361_4 (huckleberry_hound VARCHAR, air_date VARCHAR)

How many Huckleberry Hound episodes were aired on 1960.09.18?
SELECT COUNT(huckleberry_hound) FROM table_19860361_4 WHERE air_date = "1960.09.18"
SELECT COUNT("huckleberry_hound") FROM "table_19860361_4" WHERE "1960.09.18" = "air_date"