Weekly journal-miner., 1920-10-20
SERVICE DISPLAY WITH
 MODELS
(From Sundays Daily)

VI OllA Oullucy . DdllE
 Providing what has been termed by spectators one of the most inter
 esting and instructive exhibits on
 the grounds, the National forest ser vice booth at the \. A. State Fair attracted a large number of people
 Thursday, Friday and yesterday.
 National forest examiner for the Southwest Edward P. Ancona and Forest Ranger M. L. Nichols erect
 ed and are in charge of the exhibit. which includes a number of remark able models, the product of skilled government workmen, which were
 shipped from Washington.
 The main attraction of the display lis a series of three models Dlustrat-
 ing the advantages of modern log .ging methods over wasteful methods still ln use. Another model espe- .clally adaptable to the southwest shows the relation of the national forests and their timber growth to water supply. In addition to these, .the display includes a series of s panels of large photographs illus tratlng various features of the na- .tlonal forests and forest rangers du- ties and amusements, and large map equipped with an intricate aD- paratus makes clear 10 observers the scientific fire detection system now in use in the forests.
 The three models illustrating mod ern logging methods and their ad- vantages are exactly alike in topo- graphy, model 1 showing a normal l-acre stand of western yellow pine before cutting, model ? the same stand after it has been logged by modern scientific methods, and model 5 the same stand after old. wasteful methods of cutting have been used.
 The models are beautifully con trived, even to the last detail, and Examiner Ancona says they are among the finest products of the government matchmaker art In model ? the effects of scientific logging are clearly seen. Allowance has been made for future growth to mature in 25 years, whereas under the older methods a century is often required for ,reforestration. The best part of the' 'tree being in the bole. the tree IS cut close to the ground. leaving low stumps, and gaining 50 to 100 feet of additional timber Crushing of other trees is avoided, even the smallest timber is utilized. and logs and cut wood are piled out of the way of roads and trails and away from trees.
 In the model showing the results of wasteful logging on the same acre, the trees are felled in any di- rection, breaking and crushing oth- CTS, there is much waste in high stumps, and large tops and broken brush. not properly disposed of, constitutes a serious fire menace. The young growth is destroyed by careless felling, and no seed trees are left for reforestration. Fires and erosion will make a worthless area of once valuable forest land.
 Tn the model illustrating the rela- ton of timber growth to water sup ply. a miniature but genuine river flows from the hills past valley farms and into desert lands. On a 1 painted background beyond the hills the mountainous forest lands climb 1. nto the distance clearly showing the relation of forested water-shcds to western agricultural projects. The model is equipped with storage and a diversion dam which provide . an capitalized supply of water for the 'allcy ranches. With the water lowing through the miniature scene, his display attracted much attcn- ion.