0001193125-05-209553 10-Q 6 20050930 20051027 20051027 GALLAGHER ARTHUR J & CO 0000354190 6411 362151613 DE 1231 10-Q 34 001-09761 051158707 TWO PIERCE PLACE ITASCA IL 60143 6307733800 10-Q 1 d10q.htm FORM 10-Q EX-15.1 2 dex151.htm LETTER OF ACKNOWLEDGEMENT FROM ERNST & YOUNG LLP EX-31.1 3 dex311.htm RULE 13A-14(A) CERTIFICATION OF CHIEF EXECUTIVE OFFICER EX-31.2 4 dex312.htm RULE 13A-14(A) CERTIFICATION OF THE CHIEF FINANCIAL OFFICER EX-32.1 5 dex321.htm SECTION 1350 CERTIFICATION OF CHIEF EXECUTIVE OFFICER EX-32.2 6 dex322.htm SECTION 1350 CERTIFICATION OF CHIEF FINANCIAL OFFICER