Question

How does syntax contribute to the writer's style in these lines?
It supports the author's use of dry humor. The next day in the morning they took their travel, intending a day's journey up the river. I took my load at my back, and quickly we came to wade over the river; and passed over tiresome and wearisome hills. One hill was so steep that I was fain to creep up upon my knees, and to hold by the twigs and bushes to keep myself from falling backward. My head also was so light that I usually reeled as I went; but I hope all these wearisome steps that I have taken, are but a forewarning to me