Clearly the duties of the two chairs were too much for one person so in 1880 Henrici was formally installed as professor of applied mathematics and mechanics and resigned his chair of mathematics.
Malinaw ang tungkulin ng dalawang upuan ay masyadong marami para sa isang tao para sa 1880 Henrici ay pormal na-install bilang propesor ng inilalapat sa matematika at mechanics at ang kalooban ng kanyang silya ng matematika.