Title
Natural Philosophy
Caption
Using a speaking tube to communicate with someone or another room or on another floor. From ''Natural Philosophy'' by A. Ganot, London, 1887
Date
1887
Credit line
Photo12/Ann Ronan Picture Library
Reference
ARP18A08_490
License type
Rights managed
Available size
60,0Mb (3,9Mb) / 16,8in x 13,9in / 5036 x 4164 (300dpi)