EXHIBIT 12.1

                    Statement Regarding Computation of Ratios


Computation of Ratios
- ----------------------

The following formulas were used to calculate the ratios in Financial
Information and Supplementary Data, page 42, Selected Financial Data for the
years ended December 31, 1997, 1996, 1995, 1994 and  1993, included in this
report.

(Calculation)
Net Income/Weighted average shares of common stock outstanding for the period
= Earnings Per Share



                                                            December 31,
                                 1997           1996           1995           1994           1993
                              -----------    -----------    -----------    -----------    -----------
                                                                              
                                                                           
Net Income                    $ 1,930,568    $ 1,643,994    $ 1,470,347    $ 1,287,713    $ 1,192,614
 
Weighted Average
Shares Outstanding              1,209,085      1,209,085      1,209,085      1,208,987      1,206,498
 
Per Share Amount              $      1.60    $      1.36    $      1.22    $      1.07    $       .99


(Calculation)
Cash dividends/ Shares issued
= Cash dividends declared per share


                                                            December 31,
                                 1997           1996           1995           1994           1993
                              -----------    -----------    -----------    -----------    -----------
                                                                              
                                                                              
Cash dividends                $   652,936    $   573,698    $   410,525    $   448,535    $   410,130 

Shares issued                   1,209,085      1,209,085      1,209,085      1,209,085      1,209,085
 
Per Share Amount              $       .54    $       .47    $       .34    $       .37    $       .34


(Calculation)
Stockholders' Equity/ Shares issued
= Book Value per share


                                                            December 31,
                                 1997           1996           1995           1994           1993
                              -----------    -----------    -----------    -----------    -----------
                                                                              
                                                                           
Stockholders' Equity          $14,128,995    $12,649,278    $11,709,207    $10,367,843    $ 9,755,475
 
Shares issued                   1,209,085      1,209,085      1,209,085      1,209,085      1,209,085
 
Per Share Amount              $     11.69    $     10.46    $      9.68    $      8.58    $      8.07


(Calculation)
Net Income / Total average assets
= Return on Average Assets

                                                          (In thousands)
                                                            December 31,
                                 1997           1996           1995           1994           1993
                              -----------    -----------    -----------    -----------    -----------

                                                                            
Net Income                    $     1,931    $     1,644    $     1,470    $     1,288    $     1,193  

Total Average Assets          $   153,290    $   137,810    $   124,145    $   117,996    $   115,765
  
Return on Average Assets             1.26%          1.19%          1.18%          1.09%          1.03%

 


(Calculation)
Net Income/Average stockholders' equity
= Return on Average Equity


                                                          (In thousands)
                                                            December 31,
                                 1997           1996           1995           1994           1993
                              -----------    -----------    -----------    -----------    -----------

                                                                            
Net Income                    $     1,931    $     1,644    $     1,470    $     1,288    $     1,193    
 
Total Average
Stockholders' Equity          $    13,400    $    12,186    $    11,170    $    10,253    $     9,252
 
Return on Average Equity            14.41%         13.49%         13.16%         12.56%         12.89%



(Calculation)
Average Equity / Average stockholders' equity
= Average Equity to Average Assets



                                                          (In thousands)
                                                            December 31,
                                 1997           1996           1995           1994           1993
                              -----------    -----------    -----------    -----------    -----------

                                                                           
Total Average
Stockholders' Equity          $    13,400    $    12,186    $    11,170    $    10,253    $     9,252

Total Average Assets          $   153,290    $   137,810    $   124,145    $   117,996    $   115,765

Average Equity 
 to Average Assets                   8.74%          8.84%          9.00%          8.69%          7.99%




(Calculation)
Cash dividends per share/Net income per share
= Dividend Payout Ratio 


                                                            December 31,
                                 1997           1996           1995           1994           1993
                              -----------    -----------    -----------    -----------    -----------
                                                                              
                                                                           
Cash dividends          
  per share                   $       .54    $       .47    $       .34    $       .37    $       .34 
 
Net income per share          $      1.60    $      1.36    $      1.22    $      1.07    $       .99 
 
Dividend Payout Ratio               33.75%         34.56%         27.87%        34.58%          34.34%



(Calculation)
Loans/ Total deposits
= Loan to Deposit Ratio


                                                            December 31,
                                 1997           1996           1995           1994           1993
                           ------------    ------------    ------------    ------------    ------------

                                                                            
Loans                      $ 95,373,653    $ 80,416,680    $ 72,006,276    $ 61,667,148    $ 55,838,361

Total deposits             $137,044,813    $125,271,069    $114,895,154    $105,730,236    $105,790,970
 
Loan to Deposit Ratio             69.59%          64.19%          62.67%          58.32%          52.78%