Exhibit 99.3

                         SCRIPT FOR 8-3-98 ANALYST CALL

Good morning:
I would like to thank you for  joining us this  morning to discuss the future of
MarketSpan.  With me is our CFO, Craig  Matthews,  who will also be available to
respond to your questions. You have most likely seen the statement issued by the
Board of Directors on Friday,  appointing me as Chairman & CEO.  This  unanimous
action by the Board of MarketSpan is  particularly  gratifying  and I appreciate
their support.

The purpose of this  conference  call today has been to talk about the future of
MarketSpan  and begin to clarify our  strategy  with the  investment  community.
While I am certain  that there is a lot of interest in the board  report and its
contents,  I am not at liberty to discuss the report, since it has not been made
public.

I want to begin this  conference  call by telling  you that I firmly  believe in
maximizing shareholder value. Undoubtedly over the past few weeks you have heard
indirectly about my expectations for MarketSpan.  Let me share my views with you
now.

First,  return to shareholders has always been the over-riding  consideration in
the way that we have managed  Brooklyn  Union and KeySpan.  Our goal has been to
maximize  shareholder  value and this will  continue  to be the key factor  that
management  and the  board of  MarketSpan  consider  in  managing  our  existing
businesses and deploying the $2 billion in cash received from the LIPA sale.







Our  commitment  to  shareholders  is more than a promise - we have  proven this
through  our actual  performance.  For 17 of the past 18 years,  Brooklyn  Union
exceeded its allowed return on equity.  Since we successfully  negotiated  price
cap  regulation,  which was the first of its kind in the  country,  returns have
been even higher.  Last year our utility  return was 13.51%,  well above gas and
electric industry averages.

Our approach in the  non-regulated  area has been  conservative  and bottom line
driven.  The Company has turned down hundreds of opportunities to invest capital
in  non-regulated   business  because  they  did  not  meet  our  strict  return
guidelines. Our unregulated investments have been profitable.

Those that have not achieved their expected returns have been modest investments
and have been  disposed  of for not  meeting  our  goals.  Even in these  cases,
shareholder  returns have been protected  through the  successful  sale of these
investments.

What counts  most is our track  record for return to our  shareholders.  In that
regard,  KeySpan's  return to shareholders for the ten years prior to the merger
closing  was  15.9%.  This  compares  very  favorably  to the  return of the S&P
Utilities  Index.  It is our  intention  to continue  our  tradition of superior
returns  going  forward by  growing  and by  efficiently  managing  our  utility
business and seeking prudent investments.


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The two most critical  issues facing the Company are the  deployment of the cash
from the LIPA transaction and the effective management of our existing regulated
operations. First, let me address the issue of cash deployment.

A great deal has been written in the media about the  deployment of the proceeds
from the sale of assets to LIPA, in  particular,  about my reported  motivations
and  intentions.  Let me set the record  straight.  Any use of the LIPA proceeds
will  be  based  upon  disciplined  financial  analysis,  reviewed  by  our  top
management team and endorsed by the board of directors.  Our foundation has been
a solid, well-run company that provides superior returns to shareholders, and we
intend  to  build on that  going  forward  in a manner  that  will  benefit  all
shareholders.  The ultimate  determination of how the cash will be invested will
be based on  achieving  maximum  return on the  investment  in order to  produce
long-term shareholder value.

At the same time,  I would not rule out the sale of the  Company at a price that
reflects the intrinsic,  long-term value of the Company.  At today's price, I am
convinced that MarketSpan is greatly  under-valued.  Therefore,  I am pleased to
announce that the board of directors has approved a purchase of approximately 10
percent or 15,000,000 shares of common stock through open market purchases. Such
purchases  will begin August 13, 1998 and management and the board will consider
additional purchases once this program is fulfilled, if warranted.

Beyond share  repurchases,  we will carefully  search for  opportunities to grow
earnings and improve returns through  mergers and  acquisitions.  Our commitment
here is to enter into

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transactions that enhance  shareholder value, and not to engage in ventures that
would be  dilutive  over the medium to  long-term.  I continue  to believe  that
convergence and consolidation in the utility industry will present opportunities
to improve growth rates,  increase earnings for shareholders and reduce costs to
consumers.  If  opportunities  arise that we believe meet our criteria,  we will
pursue them.

The  benefits of utility  mergers or  acquisitions  should be familiar to all of
you. Let me reiterate the benefits I envisioned for  shareholders as a result of
the merger which brought about MarketSpan,  and which many of you endorsed. It's
a great strategic fit.

There is a tremendous  opportunity  for growth on Long Island.  Less than 30% of
the  residences  use natural gas for heating.  I believe that the reputation and
marketing  expertise  of  Brooklyn  Union  can be  utilized  on Long  Island  to
accelerate  growth in  natural  gas sales.  Some  160,000  customers  have a gas
service in the home used only for  cooking or water  heating,  and they are ripe
for conversion to heating,  our primary growth market over the years. There have
been moratoriums on new gas sales in the North and South fork of Long Island for
30 years,  and we expect to lift them in the near future as we make  substantial
investments in expanding the infrastructure on Long Island.

Because of the  adjacency,  the  synergies  between  the two  companies  will be
maximized.  We have pledged $1 billion in savings to our customers and I believe
we can exceed that level for the benefit of shareowners in the long-term.

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We also want to capitalize on the high level of customer  satisfaction that both
companies  have  achieved.  This will allow us to greatly  expand our affiliated
energy services  companies to grow their  businesses and provide a full array of
energy  services  across the  residential  and  commercial  markets  both in our
territory and the Northeast as adjacent utilities unbundle their services.

Beyond potential opportunities in the utility industry, we will consider related
opportunities in the gas and electric industry. These opportunities will only be
considered  if they provide risk adjusted  returns  superior to our hurdle rates
and if they  involve  businesses  in which  we have  expertise  and a record  of
success.  Under  no  circumstance  will  we do a deal  for  the  sake  of  doing
something.

An example of a related activity is our investment in the Iroquois Pipeline.  We
are now the largest LDC owner of that facility and have earned an average annual
return on equity of 13.6 percent since its first full year of operation. Another
example is our  investment  in Houston  Exploration  which has  achieved a total
annual  return  to  shareholder  of 20%  since its  inception  in 1986.  We have
maintained a profit-oriented, conservative approach to our investments in energy
related  businesses,  which  exemplifies both our commitment to shareholders and
our ability to leverage our above average utility returns.

Managing the regulatory environment has been one of our core competencies, and I
am confident that we can quickly restore  favorable  relationships  with the New
York State  Public  Service  Commission.  Re-establishing  favorable  regulatory
relations is key to the maintenance of returns

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from our  regulated  activities  since  87  percent  of our  current  net  plant
investment is in businesses regulated by the state of New York.

We have a history of good relations with public  officials who influence  energy
policy. I have contacted many of these parties in the last few days and this has
reaffirmed my confidence in building on this excellent relationship.

We have also contacted LIPA,  MarketSpan's largest customer,  and have begun the
process  of  rebuilding  that  relationship.  We have a very  talented  force of
employees and managers  effectively  running the  transmission  and distribution
assets for LIPA, and I have full  confidence in our ability to fully realize the
incentives under that contract.

At the same time we need to greatly enhance MarketSpan's community relationships
to make us more  accessible and sensitive to the needs of all the communities we
serve.  We will build on Brooklyn  Union's  reputation  and track record in that
regard. This will enhance our growth opportunity and capitalize on our access to
the over two million  customers that make up our customer base. I have begun the
process of reassuring our employees who have been affected by the uncertainty of
the last few months. It is important that they all understand we are one company
and remain  focused on moving  forward to achieve all the  potential of this new
company.


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We  certainly  recognize  the need to enhance our  relationships  with our major
shareholders  and the  analysts  who follow and support  our stock.  KeySpan has
traditionally maintained a proactive forthcoming investor relations program, and
we are committed to providing the same level of  communications  with  investors
going forward.

Our 10-Q report will be issued on August 12, 1998 and shortly thereafter we will
host another conference call to discuss financial and other important matters of
the  Company.  We will follow that call with  individual  and group  meetings to
update members of the financial community on our progress and our future plans.

Thank you for listening. Craig and I will be happy to answer your questions.




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