|The best drawing I have found of the structure of the acanthus scroll|
The quality of the draughtsmanship in every engraving is just superb. I'm giving you a close up view here, hoping that you'll enjoy these as much as I do. They are exquisite examples of how to draw ornament.
I posted a set of 187 images from the book here, on my Flickr page. Don't forget to click the largest size before you download.