Some determinatives are specific to individual trades, i.e. metallurgy, for example and are not in the Gardiner's sign list of Egyptian hieroglyphs.
The core of the book is based on the Egyptian language, with a chapter each for: Each hieroglyph is examined with: Phonetics and Writing, (the four to seven example graphically displayed words), and, Semantics.
The semantics may tell its history, or some of the complexities dealing with multiple uses or unknown understandings about the hieroglyph.
The give away is that page 154 list the determinative for disease/pain as a sparrow, but the hieroglyph plate is labeled as "jar".
Then on page 156 the determinative for milk jar is a vase, which is clearly seen in the hieroglyph, but the plate is labeled "disease, pain".