100 SUBSTITUTION OF DEBENTURES. Upon receipt by the Company of evidence satisfactory to it of the loss, theft, destruction, or mutilation of any Debenture, and of indemnity satisfactory to it (which, in the case of any original purchaser of the Debentures, shall be a contractual obligation of such purchaser) and upon surrender, at the office or agency maintained in accordance with Section 8, and cancellation of any Debenture, if mutilated, the Company will execute and deliver a new Debenture of like tenor, in lieu of such Debenture, dated the most recent date to which interest on such Debenture shall have been paid. 110 EVENTS OF DEFAULT. If any one or more of the following events (herein called "Events of Default") shall occur and be continuing: