Ms. Jan;   Almost certainly "O.S." and "N.S." are designators of volumes of courts' reports.  

As such, you will find the records filed in those volumes in almost exact chronological order.  I have no access to those records, but your page citations should take you to the entries designated, and the documents immediately before and immediately afterwards should reveal with great accuracy - within a few days or a week or two - the dates of the filings of your sources records.  Paul  

Though I can not know for certain from this distance, I would almost bet that the symbols "O.S." and "N.S." designate old series and "new series", thereby revealing a verbatim re-write by the clerks of the "original" books, those old pones having worn out from use.   
 
  ----- Original Message ----- 
  From: Jan Hensley 
  To: [log in to unmask] 
  Sent: Monday, May 26, 2003 7:48 PM
  Subject: Date of Augusta Court Filing from Chalkley


  I need help deciphering a date from **court citation in Lman/
  halkley's "Scotch-Irish Settlement in Virginia," (volume 2, Records of
  Augusta County Virginia 1745 - 1800).  The extract refers to Smith vs.
  Smith -- O.S. 333; N.S. 120, but doesn't include the filing date which
  Augusta Courthouse sez it needs to help locate the file.

  Clalkley's lists a will filed in Rockingham in January 1799 (which
  Rockingham sez was sent to Augusta) and summarizes the ensuing will
  challenge.  With the limited information I have about the family and from
  the description in Chalkley's, I've narrowed the filing date down to
  between 1810 - 1826.  I'm hoping that someone out there is experienced with
  the O.S. & N.S. citations and that that might lead me to a more targeted
  date.

  Much thanks for any help you can provide.  This law suit will unravel one
  of the mysteries in my lines.

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