The artillery chapter, starting on p. 116, in vol 2 of:

La campagne de 1794 à l'armée du Nord (1905) by Michel Henri Marie Coutanceau, Clément La Jonquière and Henri Ernest Maurice Leplus

http://books.google.com.au/books?id=wednAAAAMAAJ&pg=PA116
http://bks3.books.google.com.au/books?id=L91S-ON7gIQC&pg=PA116
http://bks6.books.google.com.au/books?id=vwUjAQAAIAAJ&pg=PA116
http://archive.org/stream/lacampagnedelar00leplgoog#page/n131/mode/1up