UPDATED POST May 7, 2018 Biodiversity Heritage Library Enhances Service with New Features; Full Text Search of Books, Faceted Browsing, and Search Inside the Book Now Live (via BHL Blog)
Details, “how to” and screenshots.
From the BHL Blog:
Our full text search will include faceted browsing, making it easier for you to explore your search results by applying filters for content type, publication date, subject, and more. Additionally, we’re adding “search inside this book” functionality, allowing you to search for terms within a book you’re viewing.
We expect to launch full text search this month (May 2018).
Direct to Biodiversity Heritage Library