Model of a ventilator, London, England, 1831-1870
1831-1870
Ventilator, model of patent by Robert Boyle
Ventilator, model of patent by Robert Boyle
1801-1850
Sedan chair used to carry patients to hospital, South America, 1701-1900
1701-1900
Ventilator, model of patent by Robert Boyle
1831-1870
Viewer with facetted window
1850-1870