SCHEDULE 14A INFORMATION

   Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of
                                      1934
                                (Amendment No. )

Filed by the Registrant [X]

Filed by a Party other than the Registrant [_]

Check the appropriate box:

                                          [_]Confidential, for Use of the
[_]Preliminary Proxy Statement              Commission Only (as Permitted by
                                            Rule 14a-6(e)(2))

[_]Definitive Proxy Statement

[X]Definitive Additional Materials

[_]Soliciting Material Pursuant to (S)240.14a-11(c) or (S)240.14a-12


                              Columbia Energy Group
              -----------------------------------------------------
                (Name of Registrant as Specified In Its Charter)


              -----------------------------------------------------
    (Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

[X]No fee required.

[_]$125 per Exchange Act Rules 0-11(c)(1)(ii), 14a-6(i)(1), 14a-6(i)(2) or Item
   22(a)(2) of Schedule 14A.

[_]$500 per each party to the controversy pursuant to Exchange Act Rule 14a-
   6(i)(3).

[_]Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11.

  (1) Title of each class of securities to which transaction applies:

  (2) Aggregate number of securities to which transaction applies:

  (3) Per unit price or other underlying value of transaction computed pursuant
    to Exchange Act Rule 0-11 (Set forth the amount on which the filing fee is
    calculated and state how it was determined):

  (4) Proposed maximum aggregate value of transaction:

  (5) Total fee paid:

[_]Fee paid previously with preliminary materials.

[_]Check box if any part of the fee is offset as provided by Exchange Act Rule
   0-11(a)(2) and identify the filing for which the offsetting fee was paid
   previously. Identify the previous filing by registration statement number, or
   the Form or Schedule and the date of its filing.

  (1) Amount Previously Paid:

  (2) Form, Schedule or Registration Statement No.:




  (3) Filing Party:

  (4) Date Filed:

Notes:





Richard: Columbia's rich legacy is springboard to new era.
Here are remarks by Oliver G. Richard III, Columbia Energy Group chairman,
president and CEO, at the company's annual meeting last Wednesday in Lexington,
Ky.
Let me say once again how wonderful it is to be in the great state of Kentucky
which is famous for its hospitality, and, of course, to Joe Kelly [chief
operating officer of Columbia Gas of Kentucky] and all of our employees in the
great state of Kentucky.
During my tenure as chairman I have rotated our annual meeting around the
territories served by the Columbia companies. I am pleased to have this
opportunity to hold our annual shareholder meeting here in Lexington. This is a
watershed time for Columbia as we enter into a new century and -- as our 1999
annual report headlined -- a new era begins for Columbia's employees and
shareholders.
On June 2, 2000, our shareholders will vote on a merger between Columbia Energy
Group and NiSource Inc.
The two companies announced agreement on February 28 for NiSource to acquire all
of Columbia's outstanding shares.
This transaction values Columbia's common equity at approximately $6 billion,
which was 27percent above the market capitalization of the company at the time
of the announcement.
NiSource will also assume about $2.5 billion in Columbia debt. Our agreement
with NiSource -- and the value that agreement delivers - f orm the capstone of
five years of successful efforts to provide extraordinary value to Columbia's
shareholders.
The value to be received in this transaction is well above what Columbia could
achieve on its own in a dramatically changing competitive environment.
That environment will be defined increasingly by the consolidation of companies
and operations -- which we believe will occur with increasing intensity as
technology transforms the energy delivery business.
ince the merger agreement was announced at the end of February, NiSource and
Columbia have filed for approval by various state and federal regulatory
agencies, and are making steady progress toward the expected completion of the
merger by the end of 2000.
Columbia's board of directors approved this transaction because it represents
the best means of delivering increased value to our shareholders. That
conclusion resulted from an extremely thorough analysis of Columbia's business
plan and other available alternatives for generating long-term value.
This analysis that our outside advisors helped us conduct involved contacts with
many U.S. and foreign companies, and substantive discussions with more than a
dozen. I can say with certainty that we made a thorough exploration of the
opportunities in the external marketplace.
This transaction also gives our shareholders and employees an opportunity to
participate in the growth of the combined entity.
In other words, the combination of Columbia and NiSource will provide two key
benefits for our company: Resolving Columbia's position in the actively
converging energy marketplace. And positioning Columbia's assets and employees
to be part of a new, larger energy powerhouse.





The combined company will have assets stretching from the Gulf of Mexico to the
Northeast, with access to 30 percent of the U.S. population and 40 percent of
America's energy consumption.
The company will have 4.1 million customers located primarily in nine states. It
will be the largest gas company east of the Rockies, with the second largest
volume of gas sales in the United States, and one of the largest gas storage
capacities in the nation. Since 1995, Columbia has achieved a strong record of
building shareholder value. THE WALL STREET JOURNAL'S annual shareholder
scorecard shows that, for these five years ending in 1999, Columbia led the gas
utilities group in this scorecard with a 33.6 percent average annual return.
Our total return over that period -nearly 470 percent--was significantly above
both the Standard & Poor's 500 Index and the S&P Natural Gas Utilities Index.
Operating income grew an average of 10 to 12 percent in that period, and the
market value of Columbia shares rose about $3 billion.
For 1999, the company posted strong operating and financial results. Income from
continuing operations was up 18 percent. Four of our five operating segments
posted records, and our core businesses -- transmission, storage, distribution,
and exploration and production -- completed three years of improved annual
results.
Earnings per share growth from continuing operations has averaged nearly 17
percent for the past three years. And Columbia had total shareholder return of
over 11 percent in 1999, while return on equity was 17.5 percent.
The energy services industry continues to undergo a broad-based change that
creates both challenges and opportunities.
At the end of 1999, 27 states had enacted or implemented measures to deregulate
gas or electric power.
Over $110 billion in U.S. utility mergers were announced in 1999--more than
double the value of the previous year. Market price performance and
price/earnings ratios for the sector fell significantly in the second half of
1999.
At the same time, technological change continued to transform the way the
industry operates and serves its customers.
Across its operations, Columbia has led change and built a strong platform for
value creation. In 1999, we enhanced the value of our network of regulated
assets, posting top quartile returns on invested capital in transmission and
storage and in distribution.
Our pipeline operations have expanded throughput capacity over much of their
existing system, and our proposed new pipelines target promising markets.
Over the past five years we have worked in a collaborative process with
regulators and consumer groups throughout our local distribution territories to
create Customer Choice.
This process has successfully created choice for approximately 1.7 million of
our LDC customers. We hope to complete the process in the near future, so that
all of our 2.1 million LDC customerswill be unbundled.
At the end of last year, over 600,000 of these customers exercised their right
to choose another energy supplier.
While we were enhancing the value of our regulated assets, we continued to
expand our nonregulated businesses.
Columbia Energy Resources, our exploration and production operation, increased
its proved reserves by over 50 percent in four years.





And we continued to expand our platform for independent power generation --
Columbia Electric now has over 3,500 megawatts of generation capacity under
construction or development.
We have continued to review businesses that either did not meet our
expectations, or did not fit our core strategy for long-term value creation.
In the first category was our marketing operation. We reassessed our strategy in
1999, sold the wholesale and trading business, decided to exit the major
accounts business and scaled back our retail mass markets business to a smaller
geographic footprint centered around our local distribution companies. Thus, we
have dramatically reduced our business risk in this area.
So far in 2000, we have signed an agreement to sell our LNG business, and have
sold energy.com, our online energy information business.
In the case of LNG, we are selling an asset which, though attractive, our
ongoing evaluation showed was worth far more than the value it could generate
under our business strategy.
Assuming the merger with NiSource is completed within the expected time frame,
this will be the last annual meeting of Columbia Energy Group. Therefore, it
seems fitting to take a moment to reflect on Columbia's past and its future.
We trace our heritage back to 1837, when our first predecessor company was
chartered in Ohio. Columbia was incorporated in its present form in 1926 as
Columbia Gas & Electric Corporation. It became The Columbia Gas System in 1948,
and Columbia Energy Group in 1998.
Along the way, Columbia has evolved through acquisitions, start-ups,
consolidations and divestitures, entering and exiting businesses as our
industry, technology, regulatory environment and customers changed over many
generations.
When the merger with NiSource is completed, Columbia Energy Group's legacy will
live on -- in operating businesses that carry the Columbia brand as they
continue to serve customers, employees and communities as part of the new
company.
As we continue to position Columbia to achieve operating excellence and profit
growth in this transition year of 2000, I would like to close by expressing my
gratitude to those I admire.
To our dedicated employees and management team throughout the company, who
together have built value and achieved high standards for customer service in
one of the most challenging periods in the industry's history.
To our directors, who have demonstrated their independence, their integrity and
their commitment to Columbia's shareholders by their considered judgment and
careful decisions over many years, and especially at this critical time.
And to all our shareholders, for their support over a long time -- in some
families spanning generations. We look forward to completion of the merger that
will bring additional near-term value as well as attractive future growth
opportunities.

Thank you.





THE FOLLOWING IS INCLUDED TO CONFORM WITH FEDERAL REGULATIONS:

THIS PUBLICATION CONTAINS CERTAIN FORWARD-LOOKING STATEMENTS WITHIN THE MEANING
OF THE FEDERAL SECURITIES LAWS; THESE FORWARD-LOOKING STATEMENTS ARE SUBJECT TO
VARIOUS RISKS AND UNCERTAINTIES. THE FACTORS THAT COULD CAUSE ACTUAL RESULTS TO
DIFFER MATERIALLY FROM THE PROJECTIONS, FORECASTS, ESTIMATES AND EXPECTATIONS
DISCUSSED HEREIN MAY INCLUDE FACTORS THAT ARE BEYOND THE COMPANIES' ABILITY TO
CONTROL OR ESTIMATE PRECISELY, SUCH AS ESTIMATES OF FUTURE MARKET CONDITIONS,
THE BEHAVIOR OF OTHER MARKET PARTICIPANTS AND THE ACTIONS OF THE FEDERAL AND
STATE REGULATORS. OTHER FACTORS INCLUDE, BUT ARE NOT LIMITED TO, ACTIONS IN THE
FINANCIAL MARKETS, WEATHER CONDITIONS, ECONOMIC CONDITIONS IN THE TWO COMPANIES'
SERVICE TERRITORIES, FLUCTUATIONS IN ENERGY-RELATED COMMODITY PRICES, CONVERSION
ACTIVITY, OTHER MARKETING EFFORTS AND OTHER UNCERTAINTIES. OTHER RISK FACTORS
ARE DETAILED FROM TIME TO TIME IN THE TWO COMPANIES' SEC REPORTS. READERS ARE
CAUTIONED NOT TO PLACE UNDUE RELIANCE ON THESE FORWARD-LOOKING STATEMENTS, WHICH
SPEAK ONLY AS OF THE DATE OF THIS RELEASE. THE COMPANIES DO NOT UNDERTAKE ANY
OBLIGATION TO PUBLICLY RELEASE ANY REVISIONS TO THESE FORWARD-LOOKING STATEMENTS
TO REFLECT EVENTS OR CIRCUMSTANCES AFTER THE DATE OF THESE STORIES.