By using archive sources of the Graz archives Močnik's work on his Graz dissertation is described
for the first time. Močnik is presented as the most important mathematical textbook writer from
Slovenian Lands and even of all Habsburg Monarchy. The time and events that enabled Močnik's
success are researched. Lives and published works of Močnik's Graz professors are presented and
their connections with Močnik's Gorica "mentor" Augustin Cauchy are claimed. At the end, a
somewhat sad story of Močnik's family tomb at Graz cemetery is described.