The information presented is directed to environmental scientists and resource managers concerned with sulfur emissions from combustion processes. Atmospheric chemists believe these emissions accumulate in the stratosphere and affect the earth's radiation balance. Some of these emissions result from the practice of burning forest biomass, which can release a high percentage of the sulfur nutrient reserve. This loss of sulfur may be damaging to site productivity. This paper reports on a series of controlled-environment combustion laboratory experiments. The experiments showed that 50 percent to 75 percent of the total fuel sulfur was released from the samples of biomass burned. Of this, less than 0.2 percent was in the form of carbonyl sulfide (COS), hydrogen sulfide, dimethylsulfide, carbon disulfide, and dimethyldisulfide.