20 



WESTERN 



them 



drainage 



same 



are probably due to some peculiarity of soil or 

 ifayorable to forest growth. Several miles beyond 

 lc, which is 2 miles north of the railroad station of 

 (See sheet 2, p. 24.) From this prairie excellent 



Mount 



ill, 



Just before Plumb is 



Mount 



Plumb. "^^ milcpost 38 the railway enters Rocky Prairie, 



„ ,„ ,, ., which is notable for its curious mounds. The oriarin 



Seattle 81 miles. , , i i t 



of these mounds has been fully discussed by Prof. J. H. 

 Brctz, of the University of Chicago, who concludes that they arc not 

 the result of erosion, as some have thought, but that the gravel of 

 which they are composed was deposited in hummocks. Similar 

 mounds arc abundant on some other prairies. 



After traversmg anotlier belt of terminal moraine and of hills 

 composed largely of Tertiary shales the railway enters Tenino, which 



stands near the end of a projecting spur of the Cas- 

 ^""*'*' cade Range. On the right, near the station, is a 



Seattle 87 miles via m the Northwcst as the ''Tenino sandstone.^' It is 

 Plumb; 81 miles via generaUy fine grained, weU cemented, and easily 



known 



bein 



worked, and has the valuable property of hardenmg 

 rried. The high school and Trinity Church in Seattle 

 are built of this sandstone. The rock is of Eocene age. About a 



mile north of Tenirio. npnr f,"hp nlrl liS^o r^f +i.^ at^^+o. — r>^^;^^ \c^ o 



from which the Government 



Harb 



Sound 



ary, at its time 



near the line where the prairies end against the timbered hills south 



of the town. 



miles 



terminal mor 



M Tenino ^he railway is joined by the old line of the Northern 



This line passes through much prairie coun- 



om Tacoma 



try on the great outwash gravel plain formed by the melt...^ ^. 



Puget Sound glacier. A few miles north of HiUhurst and at Yelm 

 the traveler may enjoy fine views of Mount Rainier. 

 _^ As Bucoda is approached the valley widens. The railway crosses 

 Skookumchuck River (the name is Chinook for "strong water") and 

 Bucoda. ^^^ between bluffs of coal-bearing Eocene sandstone 



Elevation 256 feet. ®^ *^^ ^^^^ ^^^ ^^^ liver on the right. Just south of 

 Population 855.* Hamiaford Creek the beds in the brio-ht-red cliff on 

 Seattle s4 miles.. ^he left staud vertical. The brilliant colors have the 



burned 



Waters flowing 



Distances by the old line 



milea should be added 



