626.3 Gerard DORN. Clavis totius philosophiae chymisticae, per quam potissima philosophorum dicta referantur. Cui accessit iam recèns Artificum supernaturale... 12° Francoforti: excudebat Christophorus Corvinus 1583 Ferguson Wolfenbuttel Nat Union Cat Wisconsin [Illustrations:- 1. p22. Woodcut. 82x44mm. A cube with labelled faces stands above an open cubic box with labelled faces, within which it appears to fit. 2. p50. Woodcut. 81x51mm. A five tiered furnace with distillation apparatus using different methods of cooling the condensate, including the use of a water barrel. 3. p55. Woodcut. 81x52mm. A complex group of furnaces with a tall chimney. Different types of process are undertaken including circulation, and distillation on a water bath. 4. p94. Woodcut. 82x52mm. Above is a square sided furnace within which a large open pot is heated. Below a cylindrical furnace heats a round flat dish.]