Party with, §24-14-1. Positive testimony preferred over negative, exception, §24-14-7. Preponderance of evidence. Determining where preponderance lies, §24-14-4. BURDEN OF PROOF —Cont’d Preponderance of evidence —Cont’d Jury considerations, §24-14-4. Number of witnesses. Not necessarily with greater number, §24-14-4. Sufficient to produce mental conviction. Civil case only, §24-14-3. Presumptions generally, §§24-14-20 to 24-14-29. Sufficient to produce mental conviction, §24-14-3. Testimony of single witness. Generally sufficient to establish fact, exceptions, §24-14-8. Uncorroborated testimony. Existence of fact testified to by one positive witness. Believed, exception, §24-14-7. Generally sufficient to establish fact, exceptions, §24-14-8. BUREAU OF INVESTIGATION. Witnesses. Witness fees. Officer required to attend court as witness, §24-13-28. BUSINESS LETTERS. Failure to answer within reasonable time. Presumption arising from, §24-14-23. BUSINESS RECORDS. Extrinsic evidence of authenticity. Not required, §24-9-902. Hearsay rule exclusion. Records of regularly conducted activity, §24-8-803. Absence of record, §24-8-803. Self-authentication, §24-9-902. Subpoena for production. Business will suffer injury by production of books. Commission appointed to examine books, statement of accounts and entries. Adverse party dissatisfied with transcript, §24-13-6. Oath required, §24-13-5. Transcript of accounts and dealings with opposite party. Required, §24-13-5. 802 INDEX C CHARACTER EVIDENCE —Cont’d Testimony as to reputation or in form of opinion. Proof made by, §24-4-405. CALENDARS. Evidence. Stern’s United States calendar and Stafford’s office calendar. Admissibility in proof of dates covered, §24-14-43. CHASTITY. Rape shield law. Past sexual behavior of complaining witness. Reputation for nonchastity, §24-4-412. CAMPUS POLICE.