General rule. It has been customary to derive the authority of a partner from an assumed relation of mutual agency between the members of the firm, and it is true that the firm is respon- sible for whatever is done by any of the partners while acting for it within the limits of the authority conferred by the nature of the business carried on; 8 H. L. Cas. 268; Lind. Part., 2d Am. ed. *124; 36 Pa. 498: 58 Mo. 532; 45 Miss. 499:59 Ala. 386. The principle of agency applies to copartners; but it is only when one is acting as their agent that he binds them: 18 N. Y. L. J. 1815. It is perhaps more ac- curate to trace a partner's power to his standing as a co-principal, and to consider his agency an incident of this relation: 5 Ch. Div. 458; L. R. 7 Ex. 218. The rela- tion is a peculiar sort of agency, where the partner is agent for the firm and not merely for the other partners; 5 Ch. Div. 458. Whatever the source of a partner's power, it is, as a rule, limited to acts inci- dent to carrying on, in the usual way, the particular business in which the firm is en- gaged, and each partner has the power to manage the ordinary business of the firm, and, consequently, to bind his co-partners, whether they be ostensible, dormant. actual, or nominal; 2 B. & Ald. 673; 1 Cr. & J. 316; by whatever he may do, in the course of such management, as entirely as to bind himself. But the acts of a partner wholly unconnected with the business of the partnership do not bind the firm: 2 B. & Ald. 678; 8 Me. 320: 15 Pick. 290: 3 Johns. Ch. 23; nor will an act beyond the scope of the partnership; 79 Ga. 265. The partner's authority is incident to, and co-extensive with, the business: Pars. (Jas.) Partn. § 133. A partner's authority to act cannot be restricted by notice from another partner to a third party: 5 Den. 541; 41 Ν. Υ. 376. An insolvent partner has the same authority, even after dissolu- tion; 1 Duer 662. Partners may, by agree- ment, restrict the authority of a partner, as between themselves, but not as to third parties, without notice; Pars. (Jas.) Part. § 134. One of two partners in the practice of the law has no authority to accept for the firm an agency for the mere sale of real estate; 152 U. S. 673. Accounts. One partner can bind his Jirm by rendering an account relating to a partnership transaction; 8 Cl. & F. 121; 47 Mo. 346; Lind. Part., 2d Am. ed. *28 Actions. One partner can bring an ac- tion on firm account in his own and his co- partners' names without their consent, but they are entitled to indemnity if he sues against their will; Lind. Part., 2d Am. ed. *271; 2 Cr. & M. 318; 67 Mo. 568. This power of a partner survives the dissolution of the firm; 1 E. D. Sm. 423. One partner cannot, as a rule, sue in his own name for a firm debt; the suit must be in the names of all; Penn. N. J. 711. Admissions. After the relation of part- nership has been established, a partner may bind his co-partner by an admission; Pars. (Jas.) Partn. § 121; 143 Mass. 473; 65 Wis. 247; but the existence of the part- nership must be shown by other evidence; 102 Ν. Υ. 336. See infra. Appearance. In an action against part- ners, one may enter or authorize an appear- ance for the rest; 7 Term 207; 17 Vt. 531; 1 Binn. 214; 6 Johns. 296; 32 N. Y. Supp. 840; 4 Kan. 240; contra, L. R. 8Q. B. 398; 3 Ohio 519; see Pars. (Jas.) Partn. § 119:10 App. Cas. 680; but not after dissolution of the firm; 2 McCord 311. Nor can one partner bind his co-partners personally and individually by entering an appearance for them when they are not within the juris- diction, nor served with process; 9 Cush. 393; 11 How. 165. A partner cannot an- thorize an appearance for a co-partner, not subject to the jurisdiction of the court, or if the firm has been dissolved; 91 U. S. 160; but a solicitor instructed by a managing partner may enter an appearance for all partners; [1896] 1 Q. B. 386. Arbitration. As a general rule, one partner cannot bind the firm by submit- ting any of its affairs to arbitration, whether by deed or parol; 8 Kent 49: 3 C. & Β. 742; 35 Mich. 5; 2 So. Rep. (Ala.) 268; 40 Vt. 460; 19 Johns. 187; 1 Pet. 221. The reason given being that such a power is unnecessary for carrying on the business in the ordinary way; Lind. Part., 2d Am. ed. *129, *272. But the acting partner may be bound; 19 Johns. 137; 5 G. & J. 412. And the general rule is perhaps somewhat relaxed; Pars. Partn. § 121. It is held that one partner may bind the firm by submission to arbitration, by an agreement not under seal; 89 Pa. 453:3 T. B. Monr. 435; 25 Ill. 48; but apparently only so as to bind firm assets; 12 S. & R. 243; 89 Pa. 453. Assignments. The right of a partner to dispose of the property of the firm extends to the assignment of at least a portion of it as security for antecedent debts, as well as for debts thereafter to be contracted; Story, Part. § 101; 5 Cra. 289; 58 Mo. 532 ; 17 Vt. 394. Although the authorities differ, the better opinion seems to be that one partner cannot,