A Victorian era microscope slide of raphides from a squill plant, which glow brilliantly when viewed with crossed polarizing filters (polariscope). Raphides are crystals of calcium oxalate naturally p

 

Description Click to Enlarge Click to Enlarge Click to Enlarge Click to Enlarge Click to Enlarge Click to Enlarge Click to Enlarge Click to Enlarge Click to Enlarge Click to Enlarge Click to Enlarge C

 

This early electro-therapeutic device produces alternating current electricity.The strength and frequency of the current is controlled by changingthe cranking speed. Electricity is generated by a pair

 

YOU ARE BIDDING ON A CYCLOPEDIA OF ENGINEERING VOLUME II STEAM ENGINES , INDICATORS , VALVE GEARS , REFRIGERATION 457 PAGES CHECK OUT OTHER AUCTIONS FOR THE OTHER VOLUMES I THRU VI I WILL COMBINE SHIP

 

Antique Style Brass Framed Fur Trade Burning Glass Magnifying

 

ilikoa Store ANTIQUE BAKELITE MEDICAL BINAURAL STETHOSCOPE 1940 WWII

 

Fine Darlaston insect mount

 

Offered here are two Mining Series souvenir cards from Will's Cigarettes. Card No. 20 and No. 23, showing a colorful scene of panning for gold in the Klondyke and Compressed Air Drilling underground i

 

The front cover reads in part : "Dr. Pierce's Compound Extract of Smart Weed. National Treatment. Positive Cure. A Treatise on the MOst Prevalent Chronic Diseases. Golden Medical Discovery. Dr. Pierce

 

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