Bui. 1233. U. S. Dept. of Agriculture. 



Plate IX. 



Fig. I.— Station W-AI, Wagon Wheel Gap, in North-Slope Douglas Fir. 



, The instrument shelter may be seen just within the timber on left (east) of rock slide. 1910. 



Fig. 2. —Location of Instrument Shelter at Station W C, in Border- 

 land between the Forested Slope and the Flatter "Park." 



