Yesterday, 02:46 PM 
		
	
	
		"An 18th-century chemical laboratory in Paris, showing instruments, furnaces, chemical vessels, and chemists, c. 1760. Alchemical symbols are arranged below in a kind of proto-periodic table. From 'Encyclopedie ou Dictionnaire Raisonne des Sciences' by Diderot."
https://tinyurl.com/muz699jv
	
	
	
	
https://tinyurl.com/muz699jv

 
 

 
