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Rights          and duties of partners   17. Subject          to contract between the partners— 
    
        
            | (a) |  | after                  a change in the firm—where a change occurs in the constitution                  of a firm, the mutual rights and duties of the partners in the                  reconstituted firm remain the same as they were immediately                  before the change, as far as may be; |  
            | (b) |  | after                  the expiry of the term of the firm, and—where a firm                  constituted for a fixed term continues to carry on business                  after the expiry of that term, the mutual rights and duties of                  the partners remain the same as they were before the expiry, so                  far as they may be consistent with the incidents of partnership                  at will; and |  
            | (c) |  | where                  additional undertakings are carried out—where a firm                  constituted to carry out one or more adventures or undertakings                  carries out other adventures or undertakings are the same as                  those in respect of the original adventures or undertakings. |  |