I recently came across this illustration from the acclaimed tome, The Secret Scrapbook of Professor A.J. Copperthwaite (The Lost Genius of English Architecture) Edited by Alan Robertson and Michael Taylor. The book gives details of a revolutionary plan to improve and re-model Caernarvon Castle, North Wales into a Carp Farm and Aquarium 1875-1877.
I was immediately struck by the possible use of a similar suit as an underwater or low atmosphere EVA suit in Victorian Science Fiction adventures.
For anyone interested in these lost records, I would suggest that they search their local records office for a copy of this book (google or e-bay).
The Secret Scrapbook of Professor A.J. Copperthwaite
Edited by Alan Robertson and Michael Taylor
Published by Grafton Books 1986