1851 Great Exhibition: Official Catalogue: Class VIII.: Margary
87. MARGARY, -.
Specimens of patent canvas. Upwards of half a million yards have been prepared for the Honourable Board of Ordnance by the process of the exhibitor.
Various pieces of prepared and unprepared canvas in different stages of decay.
The same process is extensively used in the preparation of sleepers and timber for railway and other purposes. Specimens of its application.