: Before I answer to your comments: I have a made special site for the Bopp edition. Now, every single page can be openend separately. On pp. 19-22 is an introduction by Bopp (in German). Fatio's paper starts at the end of p. 22 (in French). 

 : All of the illustrations in the Bopp edition were made by Fatio and only reproduced by Bopp.  On p. 67 and p. 68 you can see eleven figures made by Fatio - there is the "first" Fig. I and the description of this illustration can be found on p. 32. The "second" Fig. 1 can be found on p. 38, and the illustration is described by Fatio at the beginning of the same page. But in don't know exactly, why the picture is called Fig.1 as well - maybe because it's in close connection to Fig. 1 on p. 67? Or Bopp simply gave the wrong name.... 

 : Maybe the name "net structure" is inapropriate, "Structure of matter" would possibly be a better name...