This could very well be a boring book for anyone looking to clarify art history. It isn't that. It's something different. The copious footnotes are indeed there but it shows a well researched and wide ranging application of resources, they're not something to be read as the text. The writer's eye toward the physical aspect of painting is undeniable. Most painters love the connections between the historical works and the enduring thread to their current practices. The work is well researched and her writing, to me, never gets that clinical. Her history is not data but the flesh and sinew of oil painting. It's not "well illustrated" but provides a number of fold out images that reinforce her narrative points. The section dealing with the paint itself is a glimpse into the sense and interest of the painter about the importance of color, it's visual function, surface substance, and how the artist was connected to the growing aspect of scientific personal discovery. If you like to go back to a book that you've read before and randomly open it and just start to read...it can be that kind of book. I suspect every reader will find a section that drags a bit. It's not a thriller. Lovely written, often poetic, the kind of book that ends up on your shelf.