“A shed-shaped tent will catch and reflect the heat like a Yankee-baker, and you may be drying while you are sleeping.” Page 124:
http://www.thoreau-online.org/the-maine-woods-page124.html“ We had no sooner pitched our tent than the thunder-shower burst on us, and we hastily crept under it, drawing our bags after us, curious to see how much of a shelter our thin cotton roof was going to be in this excursion. Though the violence of the rain forced a fine shower through the cloth before it was fairly wetted and shrunk, with which we were well bedewed, we managed to keep pretty dry”. Page 99: http://www.thoreau-online.org/the-maine-woods-page99.html
“Our bed was made with as much care and skill as a roof is shingled; beginning at the foot, and laying the twig end of the cedar upward, we advanced to the head, a course at a time, thus successively covering the stub-ends, and producing a soft and level bed. For us six it was about ten feet long by six in breadth. This time we lay under our tent, having pitched it more prudently with reference to the wind and the flame, and the usual huge fire blazed in front.” Page 27: http://www.thoreau-online.org/the-maine-woods-page27.html
I didn’t find anything about a tent catching fire, but I only skim searched.