Take Arsnick i part Nitre 2 parts Let them flow together & <then> calcine for about 8 houres. Then take out the remaining mass & mix it well with its weight of fresh Nitre, keep them againe in calcination for 6 or 8 houres, soe that the mixture be ready to flow & the crucible or pot <all the while> red-hot; Then take out the matter & once more mix therewith its weight of fresh Nitre & let them calcine as before for 6 or 8 h. Then the matter (being now altogether fixd) must be taken out & with very well rectifyd WS swiming to the height of 5 or 6 fingers above[altered from 'about'] it, must be distilld in Balneo, yet soe that the WS may boyl upon it. The same abstracted WS may be us'd often times, only now & then some fresh [ '[approximately 2 characters illegible]' deleted] must be added to it to recruite it, & the phlegme which may be produc'd must be cast away. This destillation of WS from the fixd Ars: must be reiterated at least 20 times, & if it be repeated 30 it will be soe much the better. The medicin must be kept in the forme of a powder, & must be strowed upon the Ulcer of the party affected to the thickness of a kniffe, once in 48 h: or if the necessity be great once in 24. any ordinary fit plaister may in the meane time be kept on to cover & defend the part. If there be noe Ex Ulcerationum when the powder is 1st to be applyd, there must be a hole made <with> a Caustick. This Medicin will mortify & make as separationum of all that is malignant & leave the lips of the ulcer fresh & red, soe that the cure may be afterwards perfected with ordinary healing plaisters.