":: Is the Scotsman a sufficient source?  Alan Massie's article, para 2: http://sport.scotsman.com/topics.cfm?tid=736&id;=90962003 .  On the other hand, a pdf on the SRU site says ""The first-ever inter-school match recorded in Scotland was The High School versus Merchiston, played on 13 February 1858."" ( http://www.scottishrugby.org/shadomx/apps/fms/fmsdownload.cfm?file_uuid=A25BB25D-E612-A4BD-CA0C-E106CB0ED01F&siteName;=sru at the foot of page 1)  So it would be necessary to stress the continuing nature of the fixture, if I understand the claim correctly?  

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