From the text ... 'The ponderosa pine-grassland is characterized by the occurrence and distribution of ponderosa pine, Pinus ponderosa. It is widely spread covering some 36 million acres from the Fraser River Basin in British Columbia to Durango, Mexico, and from Nebraska to the Pacific Coast. These are highly valuable multiple-use lands, suitable for livestock grazing, timber production, wildlife habitat, improved water production, recreation, and sight-seeing. My objective is to discuss the fire ecology of this vegetation type and explain how one can fit prescribed burning and management together to have a productive harmony between man and nature.'From the Summary and Conclusions ... 'The aboriginal ponderosa pine-grasslands were kept open and parklike and stable by recurring surface fires. The ecology of this process is discussed and explained. It seems we should work in harmony with nature and use fire to reshape and stabilize our debris laden forests. It is only through this technique that we can have productive harmony between man and nature. Our greatest need at present is to teach this concept and how it works and to train land managers in the science and art of prescribed burning.'