In Lord of the Flies, what is the first sign that Piggy is an organized thinker?

Piggy is the most organized and rational of the boys on the island. The reader gets the first sign of this in Chapter One when Piggy proposes the idea of using a conch shell to summon the other boys.
Piggy believes the group must band together and continue to abide by social rules even outside of civilization. The conch shell as a uniting force emphasizes this right from the beginning. However, the group fragments once Ralph and Jack develop a great conflict over how the miniature island society is to be run. Piggy's sense of order comes to be challenged by Jack's more tyrannical, fascist domination, which has no room for rationality or diplomacy.
The destruction of the conch and Piggy's murder happen around a similar time. Both represent the end of any hope of civilized order on the island.