1 LUST II AT IONS. 
Page. 
Plate I. Crest of Bitterroot Mountains _. 10 
II. A, Cabinet Range: B, Snmmit of Cabinet Range, showing points 
touched by boundary line 18 
III. A, Camp south of summit of Cabinet Range; B, Quartzite slate 
near summit of Scotchman Peak 20 
IV. Astronomic piers in court-house grounds at Spokane. Washington. 22 
V. Diagram of triangulation for control of the Idaho-Montana 
boundary . .'. - - - 30 
VI. Transit station on random line 40 
VII. Granite boundary-line monuments 46 
VIII. Design for iron post 48 
IX. Post 48, at summit of timbered ridge 50 
X. Post 42, and line cut through timber 52 
XI. A, Granite monument on boundary line near Leonia, Idaho: />, 
sectional monument at summit of Bitterroot Mountains 54 
XII. Clark Fork of Columbia River just west of boundary line. 56 
XIII. Summit of Bitterroot Mountains, showing pack train loaded with 
sections of granite monument. GO 
XIV. Map of boundary line. GG 
Fig. 1. Design for stadia rod 41 
