THE EOTS OF WESTERX WHITE PIXE. 5 



type in northern Idaho and western Montana during the field season 

 of 1916 Trere secured. With this information plans were outlined 

 and arrangements made to secure data on as many of the areas as 

 were necessary in order to comply with the outline previously given. 

 Thanks are due to the officers of the Coeur d'Alene National -Forest 

 for their helpful cooperation throughout the season. 



In all, seven separate sale areas and one private cutting were 

 covered in the study, and data were secured from each. The Lind- 

 berg, Honeysuckle, and Cathcart chances, or sale areas, are located 

 within the drainage of the Little North Fork Eiver. The Tent, 

 Silver, and Boro Creeks sale areas are located in the drainage of the 

 main Cceur d'Alene River, near Nelson, Idaho. The Bemiett-Miner 

 chance is located on the slopes adjacent to the North Fork of the 

 Coeur d'Alene River, 20 miles above Prichard, Idaho. The private 

 cutting is located near Priest River, Idaho, and is on the Humbird 

 Lumber Company's land. All of the sale areas, with the exception 

 of the private cutting on the Priest River, are located within the 

 general drainage of the Cceur d'Alene River in the Coeur d'Alene 

 National Forest of Idaho. All the areas studied are typical of the 

 western white-pine type of forest. 



Data were secured on the trees soon after the trees had been 

 felled and before any of the logs had been removed hj the skidding 

 teams. In this manner it was possible to obtain data on a large 

 number of trees each day. The entire tree was alwaj's available, and 

 references to all the trees cut on that portion of the sale area included 

 within the study were covered by the data. No selection of in- 

 dividual trees or groups of trees was practiced, the aim being to 

 record accurate information on the. general run of the stand according 

 to age class and site. The sawing of the trees into standard log 

 lengths of 8, 12, 11, and 16 feet by the logging crews offered splendid 

 opportunities to obtain the rot dimensions and other data. The in- 

 fected culled logs of merchantable size were opened up sufficiently 

 to disclose the rotted area. The top portions of the tree beyond the 

 merchantable limit were cut open by the data crew to determine the 

 exact extent of the rot in cases where the rot ran into the top. 

 Cooperation with the logging contractors and foremen aided greatly 

 in keeping ahead of the skidding teams. 



For data on the younger age classes not found on the sale areas, 

 special permission was obtained to cut certain small areas of the 

 younger tre€s on adjacent areas. 



The trees on both the sale areas and the young age-class plats were 

 numbered consecutively as they were measured and recorded, the 

 number being placed on the stump, so that no duplication of trees 

 occurred. Similar extensive and intensive data were obtained for 



