Proof of the service.
Section 400
SEC. 400. Proof of the service. — Proof of the service of summons and complaint must be made, as follows: 1. If served by the governor or his deputy, by his certificate thereof on the summons; 2. If by any other person, by his affidavit thereof; or 3. In case of publication, by the affidavit of the printer, or his foreman, or principal clerk, to which affidavit a copy of the publication shall be attached; and an affidavit showing the deposit of a copy of the summons, in the post-office, that the same has been deposited; or 4. The written admission of the defendant. The certificate or affidavit must state the time and place of service.