[EXHIBIT 21a TO COLONIAL GAS COMPANY FORM 10-K FOR YEAR ENDED DECEMBER 31, 1995] COLONIAL GAS COMPANY SUBSIDIARIES OF REGISTRANT Subsidiaries: Organized in Ownership (a) Transgas Inc. Massachusetts 100% (a) CGI Transport Limited (1) Canada 100% (a) Included in consolidated financial statements. (1) Owned by Transgas Inc. [END OF EXHIBIT 21a TO COLONIAL GAS COMPANY FORM 10-K FOR YEAR ENDED DECEMBER 31, 1995]