These herculean laborers, arduous as they were, constituted but the advocation of the busy man for, all the time, he carried on his classes, teaching five hours a day from eight until one. Each Saturday exhausted his funds and on Monday he had to begin collecting again. But, nothing daunted or discouraged the invincible enthusiast, he stuck resolutely to his task until it was done, and in March 1845 he had the satisfaction of hoisting his telescope into place. At the time, it was the second-largest refracting telescope in the world. There was no salary attached to the office of astronomer in this new observatory and Mitchel supported himself by civil engineering on the route of the Ohio & Mississippi Railroad (Ohio and Mississippi Railway) and by lecturing anywhere and everywhere.