A problem of great importance from the standpoint of final results is that of having seed available at the season of the year when it is needed. Past experiments have shown that fall sowing is essential to success in most parts of the West where extensive seeding projects will be conducted. Experience has also shown that seed on a large scale cannot be extracted in time for use in the same season. Moreover, every year is not a good seed year, so that Forest officers must take advantage of the good years to collect large quantities and store them for use during years of seed shortage. Purchased domestic or foreign seed cannot be used to advantage to make up these deficiencies because it is sometimes of poor quality and not adapted to the climatic conditions in which it must be sown. For these reasons methods had to be devised for storing large quantities of seeds for several years at a time and in such a manner that their vitality would not be impaired. Many storage tests have been made by the Forest Service to determine the best way of storing seeds. The tests showed that the sealed glass jar is the best container and that seed must be stored either in air-tight receptacles or at low temperatures to be kept for any considerable period without loss of fertility. Probably the greatest obstacle encountered in reforestation by direct seeding is the destruction of the seeds by rodents. The failure of many direct seeding projects has been due primarily to loss from this cause. Failure has occurred on areas of practically every character regardless of the time of the year the seed was sown. Success has been encountered only where recent burns had largely eliminated the animals either by outright destruction or by the loss of food supply. The rodents which are most destructive to tree seeds are the ground squirrels, the chipmunks, the mice, and the gophers. It is not strange that they should seek out the seed that has been carefully sown by the Forest officers. In many cases these seeds are their natural food and they are wonderfully diligent and expert in searching it out. In coöperation with the Biological Survey, the Forest Service has worked on the problem of destroying the rodents. Many methods have been tried out in the field. The free use of grain poisoned with strychnine has thus far produced the best results and has reduced the loss from rodents sufficiently to secure satisfactory germination. The successful elimination of such injury appears to lie in the thorough poisoning by this method of areas to be seeded, once or oftener in advance of sowing.