An officer of a court of chancery, who acts as an assistant to the chancellor. 3 Edw. Ch. 458; 19 Ill. 131. A master in chancery is an officer ap pointed by a court to assist it in various proceedings incidental to the progress of the case before it, and is usually employed to take and state accounts, to take and re- port testimony, and to perform such duties as require computation of interest, the value of annuities, the amount of damages in particular cases, the auditing and ascer- taining of liens upon property involved,. and similar services. The information which he may communicate by his findings in such cases, upon the evidence presented to him, is merely advisory to the court, which it may accept and act upon, or dis- regard in whole or in part, according to its own judgment as to the weight of the evidence; 104 U. S. 420. The masters were originally clerks associated with the chancellor, to discharge some of the more mechanical duties of his office. They were called preceptores, and gradually increased in number un- til there were twelve of them. They obtained the title of masters in the reign of Edw. III. Their office was mainly judicial in its character, but some- times included ministerial offices. See 1 Spence, Eq. Jur. 360-367; 1 Harr. Ch. 436; 1 Bail. Ch. 77; 1 Des. Ch. 587. The office was abolished in England by 15 & 16 Vict. c. 80. In the United States, officers of this name exist in many of the states, with similar powers to those exercised by the English masters, but variously modified, restricted, and enlarged by statute, and in some of the states similar officers are called commissioners and by other titles. The master's office is a branch of the court and he has power to control the proceedings of parties be- fore him: 3 Edw. Ch. 458. It is not within the general province of a master to pass upon all the issues in an equity case, nor is it competent for the court to refer the entire decision of a case to him without the consent of the parties. It cannot, of its own motion, or upon the request of one party, abdicate its duty to determine by its own judgment the con- troversy presented, and devolve that duty upon any of its officers; Field, J., in 129 U. S. 524. But when the parties consent to the reference of a case to a master to hear and decide all the issues therein and such reference is entered as a rule of the court, the determinations of the master are not subject to be set aside and disregarded at the mere discretion of the court. A refer- ence by consent of parties of an entire case, though not strictly a submission of the controversy to arbitration-a proceeding which is governed by special rule-is a sub- mission of the controversy to a tribunal of the parties' own selection, to be governed in its conduct by the rules applicable to the administration of justice in tribunals es- tablished by law. Its findings, like those of an independent tribunal, are to be taken as presumptively correct, to be re- viewed under the reservation contained in the consent and order of the court, when there has been manifest error in the con- sideration given to the evidence, or in the application of the law, but not other- wise; id. The reference of a whole case to a master has become in late years a matter of more common occurrence than formerly, though it has always been within the power of a court of chancery, with the consent of both parties, to order such a reference; 1 Sim. 134. The power is incident to all courts of superior jurisdiction; 97 U. S. 581; and is covered in most of the states by statutes; 129 U. S. 525, followed in 144 U. S. 585; 145 U. S. 132; 155 U. S. 637. In most jurisdictions, where an action is properly in equity, the court has a right to refer it to a master, without consent of parties; 25 Ia. 280; and such was the regu- lar practice in Pennsylvania until recent rules, made by the supreme court, required equity cases to be tried by the judges in open court on viva voce testimony. The duties of the masters are, generally; first, to take accounts and make computa- tions; 18 How. 295; 2 Munf. 129; 14 Vt. 501; Walk. Ch. 532; second, to make in- quiries and report facts; 3 W. & Μ. 258;8 Paige 305; 23 Conn. 529; 1 Stockt. Ch. 809; 2 Jones, Eq. 238; 5 Gray 423; 5 Cal. 90: third, to perform some special minis- terial acts directed by the court, such as the sale of property; 11 Humphr. 278; 25 Barb. 440; settlement of deeds; see 1 Cow. 711; appointment of new trustees, and the like; 1 Barb. Ch. Pr. 468; fourth, to dis- charge such duties as are specially charged upon them by statute. In the federal courts the judges are pro- hibited by statute from appointing as masters any relation within the degree of first cousin 1 Fed. Rep. 91; or except when special reasons exist therefor, a clerk of a federal court; 20 Stat. L. ch. 415; but consent of parties is held to be sufficient special reason; 3 Cliff. 146; 1 Fed. Rep. 91; Rule 75. Cases in which reference to the master should be ordere