On this page of the guide to BioShock Infinite, you will find information about where to find infusions / essences in chapters 9-16. Information about each infusion features a description and a picture. There are 5 infusions to find in chapters 9-16.
Hall of Heroes - a side room visited along the way to the exhibit.
The Courtyard - inside a small warehouse on the ground floor (you can explore it after the battle with Slate's men).
Soldier's Field - on board of the First Lady airship.
Fort Franklin - behind the bars in a prison cell located under the sky-line.
Worker Induction Center - inside a smaller office near the main hall.