36 Kansas Academy of Science. 



valleys. In the valleys of the Missouri, Kansas and Big Blue 

 occur patches of till down to within 25 feet of the flood plain, 

 or 40 or 50 feet above the level of the stream. 



The Charactei' of the Till. The till where it has been least 

 weathered is a bluish gray with few bowlders and pebbles, 

 and traversed with joints, dividing it into irregular polyhedral 

 blocks. The joints are frequently filled with thin, chalky 

 veins, and the adjacent till is weathered to a yellowish-brown 

 for a thickness of half an inch or more. When the till is 

 weathered, as in most railroad cuts, it is of dull yellowish gray. 

 The bowlders associated with it are from 50 to 90 percent red 

 quartzite from the well-known ledges in Minnesota. The re- 

 mainder is mostly gray granite, some times much disinte- 

 grated, and greenstone of varying texture, which is usually 

 little changed by weathering. Limestone is usually not promi- 

 nent. 



Distribution of Boivldei's. Bowlders are remarkably abun- 

 dant at several points, generally along the western margin, 

 particularly in strips which pass north and south past Fostoria 

 and Blaine; also six miles north of St. George, two or three 

 miles west of Wamego, and four to six miles south of Wamego, 

 along the east side of an old channel leading over the divide 

 from Kansas river to Mill creek. Other very bowldery strips 

 are found along channels leading to the Wakarusa from near 

 Dover and Topeka. 



Strise. Comparatively few cases of striation of bedrock 

 have been found. This is partly due to the lack of thick strata 

 of limestone and partly to shallowness of the overlying soil. 

 Probably surfaces which were once well striated have had the 

 strise removed by weathering. The following are all the cases 

 which have been observed in Kansas, with some from adjacent 

 territory : 



Locality. Direction. 



Two miles southwest of Seneca S. 21° 2.3° W. 



Northeast of Quindaro Park, 117 feet above Missouri bottom S. 16° W. 



Near corner Twenty-fifth street and Sandusky, Kansas City, Kan, 125 



feet above the Missouri S. 12° 24° W. 



Two miles east of Lenape, 125 feet above the Kansas S. 21° E. 



One mile north of St. Joseph, 125 feet above the Missouri S. 26° W. 



One mile north of Kansas City, 130 feet above river S. 79° 24° W. 



East part of Kansas City, 100 feet above river S. and S. 6° E. 



Moraines. Although several other observers have reported 

 marginal moraines in Kansas, the writer, after examining 



