It's seems to be accessible online if you belong to one of a list of libraries: Fair Isabel's Garland. (Click the link to see the libraries).

This seems to be part of Gale's Eighteenth Century Collection online and there's a link on that page for a free trial which might let you access it.

(One of the libraries is National Library of Australia, so if there are any of out antipodean members with access they could get a copy too)


Mick