For predicting even-aged crops resulting from entire restocking, the acquisition of necessary basic information is as difficult, or more so, but its application is far simpler. That the ground will be fully stocked by natural or artificial means must be assumed, but we can also assume that the result will be influenced only by normal locality conditions and not by accidental condition of the present forest. Therefore we use a yield table and not a growth table. This can be made by actual measurement of existing second growth stands of different ages, which proves not only the growth rate but also the number of trees which the natural shade-thinning process results in at different periods of the forest life. The chief danger of inaccuracy in such information lies in basing it on insufficient measurements or in applying it where soil or moisture conditions are greatly different. The latter error can be guarded against, however, by use of growth figures taken in conjunction with it. For example, if a yield table showing 25,000 feet to the acre at 50 years from seed is accompanied by one showing that the average stand it represents is 125 high at 50 years and its average 50-year-tree is 14 inches in diameter, little investigation is necessary to determine whether in any given locality the growth falls far above or below that. An attempt to reproduce here any considerable number of growth and yield tables would be of doubtful use without more space than is allowed to explain how they are made and used. There are many technicalities, both mathematical and silvicultural, and unfortunately most of the available figures for the Northwest, obtained by the Forest Service, have not been generalized enough for wide popular value. This is particularly true of yield tables which necessarily require assuming standards of merchantability. While the best western white pine table assumes that by the time a new crop is cut 7-inch white pine will be salable, the best fir table was worked upon a 12-inch diameter basis. Obviously this would show an unfairly greater yield of a pine forest containing trees between 7 and 12 inches and be very misleading in calculating financial results at the same age and stumpage rates; yet without the original data there is no way of reducing both tables to the same basis. As an example, however, to indicate how the financial possibilities of second growth can be arrived at if a systematic study is made, let us take the Douglas fir figures referred to. DOUGLAS FIR