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The Hero of Alexandria's design for a pneumatic organ
ARP23A15_312

The Hero of Alexandria's design for a pneumatic or...

Two boys trying to pull apart two Magdeburg hemispheres
ARP23A15_321

Two boys trying to pull apart two Magdeburg hemisp...

The two parts of a Magdeburg hemispheres
ARP23A15_320

The two parts of a Magdeburg hemispheres

A condensing air pump
ARP23A15_340

A condensing air pump

The Hero of Alexandria's design for a pneumatic organ
ARP23A15_314

The Hero of Alexandria's design for a pneumatic or...

The Hero of Alexandria's design for a pneumatic organ
ARP23A15_313

The Hero of Alexandria's design for a pneumatic or...

Sinking a mineshaft by Triger's method, 1841
ARP07112_009761P

Sinking a mineshaft by Triger's method, 1841

Perpetual motion machine
ARP07113_010329P

Perpetual motion machine

South Durham Salt Works, England
ARP07103_460000491

South Durham Salt Works, England

Person-to-person blood transfusion
ARP07104_460000837

Person-to-person blood transfusion

Blood Transfusion
ARP07094_390000862

Blood Transfusion