Of course, the paper copies are also available - for example in Stirling Central Library.
Vol 1: Synod of Lothian &
Tweeddale
http://www.archive.org/details/fastiecclesiaesc01scot
Vol
2: Synods of Merse & Teviotdale, Dumfries & Galloway
http://www.archive.org/details/fastiecclesiaesc02scot
Vol
3: Synod of Glasgow and Ayr
http://www.archive.org/details/fastiecclesiaesc03scot
vol
4: Synods of Argyll and of Perth & Stirling
http://www.archive.org/details/fastiecclesiaesc04scot
vol
5: Synods of Fife and of Angus & Mearns
http://www.archive.org/details/fastiecclesiaesc05scot
vol
6: Synods of Aberdeen and of Moray
http://www.archive.org/details/fastiecclesiaesc06scot
vol
7: Synods of Ross, Sutherland & Caithness, Glenelg, Orkney and of
Shetland,
The Church in England, Ireland and Overseas
http://www.archive.org/details/fastiecclesiaesc07scot