INSTRUCTIONS
The paper contains three pictures not included in the file, but they are
not essential to the understanding of the text. To require an hard copy 
write to: Liverani@mat.utovrm.it
 
 
 
 The text between the lines BODY and ENDBODY is made  of
 
 
  4678 lines and   175040 bytes (not counting <line feed> or <carriage return>)
 
 
 
 In the following table this count is broken down by ASCII  code;
 immediately following the code is the corresponding  character.
 
    110718  lowercase letters
      5516  uppercase letters
      3514  digits
         7  ASCII characters   9
 
     18954  ASCII characters  32  
         3  ASCII characters  33 !
        77  ASCII characters  34 "
      4364  ASCII characters  36 $
         6  ASCII characters  37 %
       209  ASCII characters  38 &
       108  ASCII characters  39 '
      1540  ASCII characters  40 (
      1541  ASCII characters  41 )
       206  ASCII characters  42 *
       485  ASCII characters  43 +
      2498  ASCII characters  44 ,
      1340  ASCII characters  45 -
      1296  ASCII characters  46 .
         6  ASCII characters  47 /
        71  ASCII characters  58 :
       172  ASCII characters  59 ;
        46  ASCII characters  60 <
       379  ASCII characters  61 =
        47  ASCII characters  62 >
         1  ASCII characters  64 @
       116  ASCII characters  91 [
     10615  ASCII characters  92 \
       119  ASCII characters  93 ]
      1806  ASCII characters  94 ^
      3052  ASCII characters  95 _
        71  ASCII characters  96 `
      2705  ASCII characters 123 {
       747  ASCII characters 124 |
      2704  ASCII characters 125 }
         1  ASCII characters 126 ~
 
 BODY