The document appears to be an amendment or modification to an insurance policy, specifically related to CNA Insurance's "Excess Third Party Liability Policy" (Form Q 40264-5). The text is dense and technical, detailing changes to various conditions of the policy, including definitions, cancellation procedures, and notice requirements.

Here is a summary of the key points:

1. **Definition of Loss**: The definition of "loss" has been modified to exclude investigation, adjustment, defense, or appeal costs and expenses, unless such costs and expenses are covered by the underlying insurance.

2. **Cancellation Condition**: The second sentence of the Cancellation Condition, Condition 6 in Part V of the policy, has been revised. The word "twenty" has been added, and a new condition has been added thereto.

3. **Non-Payment of Premium**: In the event of non-payment of premium, a notice shall state when not less than ten days thereafter such cancellation shall be effective.

4. **Wisconsin Notice Requirements**: If the policy is issued or delivered in Wisconsin, the Notice of Loss; Participation in Defense; by the Company is amended to read: "Notice of Loss; Participation in Defense by the Company."

5. **Action Against Company**: The Condition entitled "Action Against Company" is amended to read:
   - No action shall lie against the company unless there has been full compliance by the insured with all of the terms of the policy.
   - Any person or organization who has secured a judgment against the insured shall be entitled to recover under this policy to the extent of the insurance afforded by this policy. Bankruptcy or insolvency of the insured or of the insured's estate shall not relieve the company of any of its obligations hereunder.

6. **Cancellation by Named Insured**: The first paragraph of the "Cancellation" Condition is replaced by the following:
   - This policy may be cancelled by the named insured by surrender thereof to the company or any of its authorized agents or by mailing to the company written notice stating that thereafter such cancellation shall be effective. This policy may be cancelled by the company by mailing to the named insured at the address shown in this policy, written notice stating when not less than ten days thereafter such cancellation shall be effective. Provided that if the named insured fails to discharge when due any of his obligations in connection with the payment of premium for this policy or any installment thereof, whether payable directly to the company or its agent or indirectly under any premium finance plan or extension of credit, this policy may be cancelled by the company by mailing to the named insured written notice stating when not less than ten days thereafter such cancellation shall be effective. The mailing of notice as aforesaid shall be sufficient proof of notice. The date of such notice or the effective date and hour of cancellation stated in the notice shall become the end of the policy period. Delivery of such written notice either by the named insured or by the company shall be equivalent to mailing.

7. **Cancellation by Company Limited**: After this policy has been in effect for sixty days or, if this policy is renewed, effective immediately, the company shall not exercise its right to cancel the insurance unless the named insured fails to discharge when due any of his obligations in connection with the payment of premium for this policy or any installment thereof, whether payable directly to the company or its agent or indirectly under any premium finance plan or extension of credit. This agreement shall apply to each successive policy period for which the company consents to renew or continue this policy and, but nothing herein shall obligate the company to renew or continue this policy beyond the expiration of any annual period commencing with its original effective date. Provided that if this policy is written without a fixed expiration date or for a policy period longer than one year, this policy may be terminated by the company effective on the expiration of any such annual period by mailing to the insured named in Item 1 of declarations at the address shown in this policy, written notice of such notice not less than thirty days prior to the expiration of such annual period. The mailing of notice as aforesaid shall be sufficient proof of notice. Delivery of such written notice by the company shall be equivalent to mailing. Notwithstanding the failure of the company with the foregoing provisions of this Condition, this policy shall terminate on the effective date of any other insurance policy issued as a replacement for any insurance afforded by this policy, with respect to any such insurance to which both such policies apply.

8. **Renewal**: If the company elects not to renew this policy, it shall mail to the insured named in Item 1 of the declarations, at the address shown in this policy, written notice of such nonrenewal not less than thirty days prior to the expiration date, provided that notwithstanding the failure of the company to comply with the foregoing provisions of this paragraph, this policy shall terminate:
   - On such expiration date if the named insured has failed to discharge when due any of his obligations in connection with payment of premium for this policy, or for the renewal thereof, or any installment of such premium, whether payable directly to the company or its agent or indirectly under any premium finance plan or extension of credit,
   - The company has by any means manifested its willingness to renew to the named insured or his representative, or
   - The named insured has notified the company or its agent that he does not wish this policy to be renewed.
   - On the effective date of any other insurance policy issued as a replacement for any insurance afforded by this policy, with respect to any such insurance to which both such policies apply. The mailing of notice as aforesaid shall be sufficient proof of notice. Delivery of such written notice by the company shall be equivalent to mailing.

This document is a legal and technical document, and it is important to consult with a legal professional for detailed interpretation and application.