2. It is issued by a court or other competent jurisdiction, and is return-able to the same. It is to be under seal and tested by the proper officer, and is directed to the sheriff, or other officer lawfully authorized to execute the same. Writs are divided into, 1. Original. 2. Of mesne process. 3. Of execution. Vide 3 Bl. Com. 273; 1 Tidd, Pr. 93; Gould on Pl. c. 2, s. 1. There are several kinds of writs, some of which are mentioned below.