Squares and Squares within Squares in Book Design

JF Ptak Science Books  Quick Post

I picked up  Bayard Tuckerman's History of English Prose Fiction (printed in New York City in 1886) part of my Borgesian-Eccoian anti-Library, and found this fantastic design on the free endpaper and pastedown:

 And a close-up, which is about one square inch:

There are about 5000 of these on a 10x6" space, some 15,000 lines.  That's a lot of work in a small space, about 289 squares per square inch.  Tiny.  Impressive.  

Q:  Oh: how many squares and rectangles are there here?  A: a lot.