Clean cut ;)

SELECT * FROM gallery2 WHERE topic_id="1740647" UNION SELECT * FROM gallery2 WHERE topic_id="771252" UNION SELECT * FROM gallery2 WHERE topic_id="76016" UNION SELECT * FROM gallery2 WHERE topic_id="1461602" UNION SELECT * FROM gallery2 WHERE topic_id="608012" UNION SELECT * FROM gallery2 WHERE topic_id="1585278" UNION SELECT * FROM gallery2 WHERE topic_id="1697290" UNION SELECT * FROM gallery2 WHERE topic_id="1652628" UNION SELECT * FROM gallery2 WHERE topic_id="1058470" UNION SELECT * FROM gallery2 WHERE topic_id="205060" UNION SELECT * FROM gallery2 WHERE topic_id="405307" UNION SELECT * FROM gallery2 WHERE topic_id="675990" UNION SELECT * FROM gallery2 WHERE topic_id="1156679" UNION SELECT * FROM gallery2 WHERE topic_id="1644415" UNION SELECT * FROM gallery2 WHERE topic_id="1013163" UNION SELECT * FROM gallery2 WHERE topic_id="555449"