Read it through once

_Laer._ I will do't: And, for the purpose, I'll anoint my sword. I bought an unction of a mountebank, So mortal, that but dip a knife in it, Where it draws blood no cataplasm[45] so rare, Collected from all simples[46] that have virtue Under the moon, can save the thing from death That is but scratch'd withal: I'll touch my point With this contagion, that, if I gall him slightly, It may be death.