ing losses. (See Plate VIII.) In the first case it is a problem of preventing the solid portion of the soil from being washed away. In the second case it is a problem of preventing the soluble portions of the soil, commonly referred to as fertilizer nutrients, from being leached. Therefore, plants will either bind the soil particles together or absorb the available soil nutrients and convert them into a less leachable form. Thus the sandy land will be benefited and conserved by the use of crops whether weeds, grass or otherwise. It is even necessary and profitable at times to bring in litter from outside to serve as a soil cover as well as to increase the moisture holding capacity of the soil for the main cash crop. This is particularly true in a warm humid climate such as Florida, where the conditions are favor- able for the soil organisms to render plant food available during the entire year. In such areas weeds or grass are often a blessing in disguse to the soil. Under Florida conditions the natural forces have tended to equalize soil losses and we have a number of very profitable volunteer crops such as beggar weed, native grasses, and other crops that grow after the cultivation of the cash crops have been discontinued. This is nature's way of replenishing her land and should be encouraged wherever possible. The value of this farm practice has been observed by many farmers. One of the most serious problems involved in the management of organic soils, such as peat and muck, is the fact that they shrink and burn readily when dried. Since organic soils con- sist very largely of plant materials, bacteria and fungi decom- pose them readily when once exposed to atmospheric conditions. Moreover, when dry, they will burn rather freely. So the prob- lem confronting the Florida Everglades is that of moisture con- trol. By moisture control is meant sufficient moisture through drainage and canal systems to prevent fires and excessive de- composition process and at the same time to drain the excessive water so that crops may be grown. It is just as important to consider this as a soil conservation measure as erosion control. Where land for any reason (sand, gullies, or what not) is not suited for cultivated crops, it should be planted to tree crops or grazing crops, both of which are soil conserving. Such a