this version: is the Yogic Treatments, 4th edition, version (obvious spelling, punctuation and typographical mistakes only may have been corrected). I.e., this is the most up-to-date version as of the present Electronic Edition.
Often we see that even though a boil has ripened, it does not show any opening. If in that case fresh pigeon droppings are applied on the boil, it will burst and an opening will show within a few hours.