476 Gasto Duclo CLAVEUS. Le filet d' Ariadne, pour entrer avec seureté dans le labirinthe de la philosophie hermetique. 12° a Paris, Chez Laurent d'Houry 1695 Ferguson Young Nat Union Cat British Library Wisconsin [Illustrations:- 1. p157 Woodcut. 68x39mm. A furnace with a flask. 2. p158 Woodcut. 68x39mm. A furnace as in item 1, but without the flask. 3. p160 Woodcut. 30x26mm. A basin from the interior of the furnace. 4. p163 Woodcut. 30x35mm. Two long-necked flasks. 5. p168 Woodcut. 45x49mm. A lamp. 6. p169 Woodcut. 10x43mm. A hook.]