Add an in-text citation using MLA format. Though wildfires in dense forests reach higher temperatures, grass fires move much more quickly. Though wildfires in dense forests reach higher temperatures, grass fires move much (MLA sth-9th editions) NRM more quickly. Source: Young Men and Fire by Norman Maclean, part 1, page 68. Published by University of Chicago Press, Chicago 1993: A fire in dense timber builds up terrific heat but not great speed. As Harry Gisborne has said, a big run for a crown fire is from half a mile to a mile an hour. A grass fire, by comparison, is usually a thin fire; it builds up no great wall of heat-it comes and is gone, sometimes so fast that the top of the grass is scarcely burned. Submit