1919, J. Allen Bartlett, “Report on a Search for the Site of the Chapel of St. Blasius, Henbury”, in Edwin Sidney Hartland, editor, Transactions of the Bristol and Gloucestershire Archaeological Society[1], volume 41, page 164:
The total area within the Romano-British fortress is perhaps three acres, and the fact that the explorer is no longer young and was single-handed quite precluded any extensive trenching in the hard and stony soil with no implements other than a shovel, a small spade and a moot-axe.