In the chapter, The Tiger's Claw, what does the sentence " I understood that the fertilizer company would have to manage without my lectures from the following day" Spoken by the talkative man mean?

The talkative man was sure that the fertilizer company would have to do without his lectures because he was certain that he would be killed by the tiger.

At this point the dream ended as the chair barricading the door came hurtling through and fell on me. I opened my eyes and saw at the door a tiger pushing himself in. It was a muddled moment for me: not being sure whether the dream was continuing or whether I was awake. I at first thought it was my friend the station-master who was coming in, but my dream had fully prepared my mind—I saw the thing clearly against the starlit sky, tail wagging, growling, and, above all, his terrible eyes gleaming through the dark. I understood that the fertilizer company would have to manage without my lectures from the following day.