230 Kansas Academy of Science. 



of about forty acres, besides a large swamp district surrounding it, 

 seems to be a scooped-out area of glacial origin. In the vicinity 

 of Mora and in the lower Dickey river country there are several 

 kettles. 



In the Hoh valley and from there southward the glacial debris 

 seems to have all come from the Olympic glaciers. Its thickness 

 and extent were not ascertained. 



As a closing remark, the islands now off the Pacific coast 

 of the peninsula were islands in pre-Pleistocene times, the 

 same as now, with the addition of many of the present head- 

 lands. In the Pleistocene epoch they were submerged, or partly 

 so, and then completely surrounded and covered over with debris 

 from the ghciers and streams of the adjacent region. At the close 

 of the epoch the country was again elevated; and the land sur- 

 face was then extended farther out to sea than the present off-shore 

 islands. Since then the sea has been continually tearing down the 

 loose Pleistocene material and carrying it out to deeper water 

 areas; and the resistant rock (the original islands) are made 

 islands again as fast as the sea can remove the debris — islands the 

 same as before, except that they now have a Pleistocene cap. And 

 the eroding work is still going on. In front of the writer's resi- 

 dence the sea has encroached upon the land 300 yards in four 

 years; and the waves now rule supreme where the Indian village 

 stood only ten years ago. In the revolving years many of the 

 present headlands will have all the loose material removed from 

 around them, and they too will be islands. 



Recent Deposits. — These are found in the deltas of the respect- 

 ive streams and in a part of the lower inner valleys of the Quilla- 

 yute and Pysht rivers, and in the Waatch Strait-Suez river region 

 west of Neah Bay. In these localities, the under rock is usually 

 sand or gravel, or both. The surface stratum is usually a rich 

 loam, and the areas it covers good farming districts. A part of 

 Waatch-Suez area is semi-tide lands, and some of it is being en- 

 croached upon by beach sands, which are being continually blown 

 inland by the prevailing southwesterly wind which sweeps the re- 

 gion. The construction of a dike to keep the sea out. and of a 

 windbreak to stop the sand-dune encroachment, has been requested 

 of the Interior Department for the benefit of the Makah Indians, 

 in whose reservation the area lies. 



As a closing remark on the structural geology of the region, 

 quoting from Doctor Arnold i*"* "A great uplift in the Olympic 



66. Bull. Geol. Soc. Am., vol. 17, p. 468. 



