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Exhibit Index on Page 2

                                   FORM 11-K

                                 UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549


Annual Report Pursuant to Section 15(d) of the Securities Exchange Act
of 1934




(Mark One)

  [X]   ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES
        EXCHANGE ACT OF 1934.
             For the fiscal year ended:  December 31, 1997

  OR

  [     ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE
        ACT OF 1934.
             For the transition period from       to



Commission file number     1- 3208

  A.    Full title of the plan and the address of the plan, if
        different from that of the issuer named below:

        North Bros., Inc. 401(k) Retirement Plan
        for Non-Field Employees

  B.    Name of issuer of the securities held pursuant to the plan and
        the address of the principal executive office:

        National Service Industries, Inc.
        1420 Peachtree Street, NE
        Atlanta, Georgia 30309



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REQUIRED INFORMATION

The following documents are filed as a part of this report:

1.   Financial Statements


     Plan  financial  statements  prepared  in  accordance  with  the  financial
     reporting requirements of ERISA include the following:

     Report of Independent Public Accountants

     Statements of Net Assets Available for Benefits as of December
     31, 1997 and 1996

     Statement  of Changes  in Net  Assets  Available  for  Benefits,  with Fund
     Information, for the Year Ended December 31, 1997

     Notes to Financial Statements

2.   Exhibits
                                                             Sequentially
                                                               Numbered
     The following exhibit is filed with this report:            Page

     23     Consent of Arthur Andersen LLP                       12



SIGNATURES

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
trustees (or other persons who administer  the employee  benefit plan) have duly
caused this annual report to be signed on its behalf by the undersigned hereunto
duly authorized.

                              North Bros., Inc. 401(k) Retirement Plan
                              for Non-Field Employees

Date: June 30, 1998           By:   National Service Industries, Inc.
                                    Plan Administrator

                              By:    /s/ James S. Balloun
                              Name:  James S. Balloun
                              Title: Chairman and Chief Executive Officer

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                                North Bros., Inc.
                 401(k) Retirement Plan for Non-Field Employees

              Financial Statements as of December 31, 1997 and 1996
                                  Together With
                                Auditors' Report


                   
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS



To the Plan Administrator of
North Bros., Inc. 401(k) Retirement Plan
for Non-Field Employees:


We have audited the accompanying statements of net assets available for benefits
of NORTH  BROS.,  INC.  401(k)  RETIREMENT  PLAN FOR  NON-FIELD  EMPLOYEES as of
December 31, 1997 and 1996,  and the related  statement of changes in net assets
available for benefits,  with fund information,  for the year ended December 31,
1997.  These  financial   statements  are  the   responsibility  of  the  Plan's
management.  Our  responsibility  is to express  an  opinion on these  financial
statements based on our audits.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all material  respects,  the net assets available for benefits of the Plan as of
December 31, 1997 and 1996, and the changes in net assets available for benefits
for the year ended  December 31, 1997, in  conformity  with  generally  accepted
accounting principles.

As further  discussed in Note 1 to the  accompanying  financial  statements,  on
February 21, 1997, the Plan was terminated.

Our audits  were  performed  for the  purpose of forming an opinion on the basic
financial  statements taken as a whole. The fund information in the statement of
changes in net assets  available  for benefits is  presented  for the purpose of
additional  analysis rather than to present the changes in net assets  available
for  benefits  of each fund.  The fund  information  has been  subjected  to the
auditing procedures applied in the audits of the basic financial statements and,
in our opinion,  is fairly  stated in all  material  respects in relation to the
basic financial statements taken as a whole.

Atlanta, Georgia
May 15, 1998



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                                NORTH BROS., INC.


                 401(k) RETIREMENT PLAN FOR NON-FIELD EMPLOYEES


                 STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS

                           DECEMBER 31, 1997 AND 1996







                                                                 1997      1996

INVESTMENT IN NSI DC TRUST, at fair value (Note 2):
    Balanced Fund ..........................................  $ 3,476 $  30,275
    Diversified Equity Fund ................................    4,711    78,662
    Stable Value Fund ......................................      776     6,403
    NSI Stock Fund .........................................    4,085    15,500
    Loan Fund ..............................................    9,410     9,671
    International Fund .....................................    2,458    17,907
              Total investment .............................   24,916   158,418

CONTRIBUTIONS RECEIVABLE--PARTICIPANT ......................        0     5,302

REFUNDS PAYABLE TO PARTICIPANTS ............................         0  (32,486)
NET ASSETS AVAILABLE FOR BENEFITS ..........................  $24,916 $ 131,234








     The accompanying notes are an integral part of these statements.



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                                NORTH BROS., INC.


                 401(k) RETIREMENT PLAN FOR NON-FIELD EMPLOYEES


           STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS,

                             WITH FUND INFORMATION,

             FOR THE YEAR ENDED DECEMBER 31, 1997




                                                               Diversified  Stable    NSI
                                                     Balanced    Equity     Value    Stock  International Loan
                                                        Fund      Fund      Fund     Fund       Fund      Fund   Other       Total
                                                                                                  
PARTICIPANT CONTRIBUTIONS .......................... $  6,102  $  11,395  $ 1,464  $  2,334  $  2,906  $     0  $ 27,184  $  51,385

NET GAIN (LOSS) FROM INVESTMENT IN NSI DC TRUST ....    6,621     15,290      411     4,125      (514)       0         0     25,933

BENEFITS PAID TO PARTICIPANTS ......................  (40,599)  (101,738)  (7,518)  (16,670)  (17,111)       0         0   (183,636)

INTRAPLAN TRANSFERS ................................    1,077      1,102       16    (1,204)     (730)    (261)        0          0

NET DECREASE .......................................  (26,799)   (73,951)  (5,627)  (11,415)  (15,449)    (261)   27,184   (106,318)

NET ASSETS AVAILABLE FOR BENEFITS, December 31, 1996   30,275     78,662    6,403    15,500    17,907    9,671   (27,184)   131,234

NET ASSETS AVAILABLE FOR BENEFITS, December 31, 1997 $  3,476  $   4,711  $   776  $  4,085  $  2,458  $ 9,410  $      0  $  24,916






     The accompanying notes are an integral part of this statement.



Page 6


                                NORTH BROS., INC.

                 401(k) RETIREMENT PLAN FOR NON-FIELD EMPLOYEES


                          NOTES TO FINANCIAL STATEMENTS

                           DECEMBER 31, 1997 AND 1996



1.   PLAN DESCRIPTION

     The following brief  description of the North Bros., Inc. 401(k) Retirement
     Plan for Non-Field  Employees (the "Plan"),  is provided for  informational
     purposes  only.  Participants  should refer to the plan  agreement for more
     complete  information.  North Bros. Inc (the  "Company") was a subsidary of
     National Service Industries, Inc ("NSI").

     General

     The Plan is a defined  contribution plan established  October 1, 1995 under
     the provisions of Section 401(a) of the Internal Revenue Code ("IRC").  The
     Plan covered all nonunion  employees of the Company who were  classified as
     "non-field  employees,"  who  had  attained  the  age of 21,  and  who  had
     completed  12 months of  service,  as  defined.  The Plan is subject to the
     provisions  of the Employee  Retirement  Income  Security  Act of 1974,  as
     amended.

     Plan Termination

     The  Plan  was  amended,  effective  February  21,  1997,  to  suspend  all
     contributions  to the Plan and to  terminate  the  Plan.  All  participants
     became  fully  vested.  In addition,  North Bros.,  Inc. was sold by NSI to
     Performance  Contracting  Group,  Inc.,  and all  employees  of the Company
     became employees of Performance  Contracting Group, Inc. The Plan is in the
     process of distributing assets to participants.

     Contributions

     Participants  could elect to  contribute  between 1% and 15% of  before-tax
     compensation,  as defined in the Plan, subject to certain limitations under
     the IRC. Matching contributions were at the Company's discretion, but there
     were none for 1997.  Additional  discretionary  profit-sharing  amounts, as
     determined by the board of directors of NSI, could have been contributed by
     the Company, but none were made in 1997.

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     Vesting

     Participants  were always fully vested in their  individual  contributions.
     Vesting of employer  contributions occurred on an increasing scale, ranging
     from 20% vesting  after one year of service,  as defined,  to 100%  vesting
     after five years of service.

     Administration

     All administrative expenses of the Plan were paid by the Company during the
     year ended December 31, 1997.

     Participants' Accounts

     Individual  accounts are maintained for each of the Plan's  participants to
     reflect the particular  participant's  contributions  and related  employer
     contributions as well as the  participant's  share of the Plan's income and
     any related investment management fees and expenses.

     The Plan's investment fund balances are expressed in units. At December 31,
     1997 and 1996, 10,635 and 16,550 units, respectively, were assigned to plan
     participants.  Unit  values  for each  investment  fund were as  follows at
     December 31, 1997 and 1996:

                                                                1997        1996

                
                Balanced Fund...............................   $33.18     $26.40
                
                Diversified Equity Fund.....................    14.04      12.05
                
                Stable Value Fund...........................    12.07      11.31
       
                NSI Stock Fund..............................    19.61      14.52
                
                International Fund..........................     4.82       5.01
                

     Investment in Master Trust

     Under a trust agreement dated September 1, 1993, as amended,  Wachovia Bank
     of Georgia,  N.A.  was  appointed  trustee of the NSI Defined  Contribution
     Plan's  Master  Trust  (the "NSI DC  Trust").  Effective  January  1, 1998,
     Invesco Trust Company has been appointed trustee of the NSI DC trust.

     The Plan's  assets are  commingled  in the NSI DC Trust  together  with the
     assets of certain defined  contribution  plans of other NSI divisions.  The
     investments  of the NSI DC Trust  are  subject  to  certain  administrative
     guidelines  and  limitations  as to type and  amount  of  securities  held.
     Certain  fund  assets are  allocated  to  selected  independent  investment
     managers to invest under these general guidelines.

     Investment Options

     The  separate  investment  options  made  available  under  the Plan may be
     changed,  eliminated,  or  modified  from  time to  time by the  investment
     committee of the NSI DC Trust. Participants made their investment elections
     in 5% increments, with changes allowed on a daily basis.

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     The separate investment options offered by the Plan were as follows:

     o    Diversified  Equity  Fund.  This  fund  is a  diversified  stock  fund
          designed to invest in a broad range of common stocks providing capital
          growth.

     o    Stable Value Fund.  This is a fixed income fund  designed to provide a
          steady  level of current  income  while  focusing on  preservation  of
          principal.

     o    Balanced Fund. This fund is invested in a changing mix of high-quality
          stocks and bonds.  The fund is designed to provide  capital growth and
          current income while limiting the risk of principal loss.

     o    NSI Stock Fund. This fund is invested in NSI common stock, although it
          may hold other short-term investments from time to time. A participant
          may not direct more than 50% of his/her account balance to be invested
          in this fund.

     o    International  Fund.  This fund is  invested  in the stock of non-U.S.
          companies and is designed to provide long-term growth.

     Loans to Participants

     Prior  to  the  termination  of the  Plan,  the  Plan  permitted  loans  to
     participants  up to the  lesser of 50% of a  participant's  vested  account
     balance  or  $50,000.  A  participant  had up to five  years to  repay  the
     principal and  interest,  unless the loan was for the purchase of a primary
     residence,  in which case the repayment  period was established at the time
     the loan was approved.  Loan processing  fees were charged  directly to the
     participant's  account.  Interest rates on loans to participants were based
     on market rates, as determined by the plan administrator. The interest rate
     as of December 31, 1997 was 9.5%.

     Loan issuances and  repayments  are included in intraplan  transfers in the
     accompanying  statement of changes in net assets  available  for  benefits.
     Interest  on loans is included  in the net gain from  investment  in NSI DC
     trust and is  allocated  to each  investment  fund  based on  participants'
     investment elections.

     Benefits

     Prior to the termination of the Plan, a participant was entitled to receive
     the distribution of his/her vested account balance upon death,  disability,
     or retirement (age 65). These benefits were payable in a lump-sum amount or
     could be paid in  installments  at the  participant's  election  if his/her
     vested  balance was greater  than $3,500 and he/she was age 55 or older.  A
     participant  who terminated  employment  with the Company for reasons other
     than these was entitled to receive his/her  contributions  in a lump sum as
     soon as administratively feasible.

     Benefits  are payable in cash,  except that any portion of a  participant's
     account  balance which is invested in the NSI Stock Fund is  distributed in
     the form of shares of NSI common  stock,  with  fractional  shares  paid in
     cash. If the equivalent number of shares to be distributed to a participant
     is less than 100, then the participant may elect to receive cash instead of
     shares as his/her distribution.

Page 9



2.   SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     Basis of Accounting

     The accounts of the Plan are maintained by the trustee on the cash basis of
     accounting.  The accompanying financial statements have been prepared using
     the accrual method of accounting by application of memorandum entries.  The
     preparation of financial  statements in conformity with generally  accepted
     accounting  principles  requires the Plan's management to use estimates and
     assumptions   that  affect  the  accompanying   financial   statements  and
     disclosures. Actual results could differ from these estimates.

     Investment Valuation

     Investments  of the NSI DC  Trust,  except  for the  guaranteed  investment
     contracts  ("GICs"),  are stated at fair value as determined by the trustee
     from quoted market  prices.  Securities  traded on a national  exchange are
     valued at the last  reported  sales price on the last  business  day of the
     plan year;  investments  traded in the  over-the-counter  market and listed
     securities  for which no sale was reported on the last day of the plan year
     are valued at the last reported bid price.

     GICs  included  in the NSI DC Trust  are fully  benefit-responsive  and are
     therefore  carried at contract  value (cost plus  accrued  interest) in the
     accompanying  financial statements in accordance with Statement of Position
     94-4.  At December  31, 1997 and 1996,  contract  value  approximates  fair
     value. At December 31, 1997, the weighted average  crediting  interest rate
     was 7%. For the year ended  December 31, 1997, the annual yield on the GICs
     held by the NSI DC Trust was 6.9%.  For certain of the GICs held by the NSI
     DC Trust,  crediting interest rates may be changed if certain events occur,
     such as  early  retirements,  plant  closings,  etc.,  but in no  case  are
     adjusted  to a rate less than 0%.  GICs are subject to credit risk based on
     the  ability  of the  insurance  company  to  meet  interest  or  principal
     payments, or both, as they become due.

     Certain GICs included in the NSI DC Trust are  synthetic;  that is, the NSI
     DC Trust owns certain  fixed  income  securities,  and the contract  issuer
     provides a "wrapper"  that  guarantees  a fixed rate of return and provides
     benefit  responsiveness.  At  December  31,  1997,  the  fair  value of the
     underlying  assets of the  synthetic  GICs  (determined  from quoted market
     prices) and the value of the related wrapper contracts were $42,945,334 and
     $(825,875), respectively.

Page 10



3.   NSI DC TRUST

     Investment Income

     Investment  income of the NSI DC Trust for the year ended December 31, 1997
     is summarized as follows:

                Dividends on common stock.......................  $     454,559
                Interest income.................................      4,303,571
                Net appreciation in fair value of common stock..      4,046,711
                Net income from common/collective trust.........     18,537,212
                Net income from mutual funds....................     14,708,000
                Net loss from pooled separate account...........       (104,200)
                              Total investment income...........    $41,945,853

     The  investment  income of the NSI DC Trust for the year ended December 31,
     1997 is allocated among participating plans as follows:

                North Bros., Inc. 401(k) 
                 Retirement Plan for Non-Field Employees.........   $    25,933
                All other NSI plans..............................    41,919,920
                              Total..............................   $41,945,853

     Net Assets

     The net assets of the NSI DC Trust are as follows at December  31, 1997 and
     1996:

                                                        1997                1996

               Mutual funds ..................... $  79,312,170   $  63,411,122
               Common/collective trust ..........    79,112,333      57,558,795
               Guaranteed investment contracts ..    52,443,357      55,187,898
               NSI common stock .................    18,045,789      11,279,289
               Loans receivable from participants     7,564,684       6,828,607
               Money market fund ................     1,740,602       3,704,985
               Pooled separate account ..........     2,385,857       2,723,094
                                                    240,604,792     200,693,790
               Cash .............................         9,476          13,342
                                                    240,614,268     200,707,132
               Accrued investment income ........       112,870         100,534
               Adjustments for pending trades ...      (199,191)       (223,542)
               Other ............................       (47,759)        (54,239)
               Net assets ....................... $ 240,480,188   $ 200,529,885

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     The allocation of the net assets of the NSI DC Trust to participating plans
     is based on participant units and is as follows as of December 31, 1997 and
     1996:

                                             1997                    1996
                                        Amount   Percent       Amount    Percent
      North Bros., Inc. 401(k) 
        Retirement Plan for
           Non-Field Employees.      $     24,916    .01%   $    158,418   0.08%
      All other plans                 240,455,272  99.99     200,371,467  99.92
                    Total            $240,480,188 100.00%   $200,529,885  100.0%
    

     Investment in NSI Common Stock

     As  of  December   31,  1997  and  1996,   approximately   7.5%  and  5.6%,
     respectively,  of the NSI DC Trust's net assets were invested in the common
     stock of NSI, a party in interest to the Plan.


4.   TAX STATUS

     The Plan has  received a favorable  determination  letter from the Internal
     Revenue  Service  ("IRS")  dated  October 6, 1997 stating that the Plan was
     designed in accordance  with plan design  requirements as of that date. The
     plan  administrator  believes  that the Plan is  currently  designed and is
     being operated in compliance  with the applicable  requirements of the IRC.
     Therefore,  the plan administrator believes that the Plan was qualified and
     that the related trust was tax-exempt as of December 31, 1997 and 1996.

     The Plan has received a separate  favorable  determination  letter from the
     IRS dated October 6, 1997 stating that the termination of the Plan (Note 1)
     does not adversely affect its qualification.