Poison Misprint in Core Rulebook

[Preston Poulter]

I apologize if this has been pointed out before.

Pathfinder Core Rulebook P. 558 wrote:

Unlike other afflictions, multiple doses of the same poison stack. Poisons delivered by injury and contact cannot inflict more than one dose of poison at a time, but inhaled and ingested poisons can inflict multiple doses at once... For example, a character is bit three times in the same round by a trio of Medium monstrous spiders, injecting him with three doses of Medium Spider Venon.

The example goes on to spell out the effects of multiple doses of poison, but, according to what's laid out earlier in the paragraph, it shouldn't have any effect beyond the first.

[Karameikos]

Being bit by three poisonous spiders is the equivalent of three separate attacks, as opposed to s single attack which delivers three doses worth of the poison. Since the resolution of the three poisonous attacks in the same round stack, the DC is incremented by +2 for each stack beyond the first, as well as extending the duration by 1/2 for each additional dose beyond the first.

Another example might help. An attacker layers three doses of poison on his blade and hits an opponent. Because only part of the blade has pierced the skin, not all three doses are delivered. In this example of why poisoning due to combat the poison would not stack because the full three doses were not delivered by the blade. However, three poisonous snakes successfully attacking inject one dose each (rather than a single snake delivering three doses) so the poison effects from those attacks would stack in the round in which the attacks were successful.