I have a dagger with +15 insidious poison
I hit a ghoul in a newbie cave (night mare) and he gets poisoned.
I back away and see him beeing poisoned for 8 times and he looses 2 life every turn.
Does this mean that if I hit a monster with a +15 insidious poison dagger, he loses 15 life in a certain number (here

Suppose I hit him a second time? Will he be poisoned again? If he is, do the two poisons stack?
What determines how many moves the poison is spread over?
Tom