The applicant shall also file with the clerk, at the time the application is made, an abstract of title such as is now commonly used, prepared, and certified to by the county clerk and recorder of the county, or by a person, firm, or corporation regularly engaged in the abstract business, having satisfied the district court that they have a complete set of abstract books and are in existence and doing business at the time of the filing of the application under this article.L. 03: p. 318, § 15a. R.S. 08: § 729. C.L. § 4939. CSA: C. 40, § 184. CRS 53: § 118-10-16. C.R.S. 1963: § 118-10-16.