Right on this road is LEITH, =4 m.= (2,353 alt., 174 pop.), named for Leith, Scotland. It is on the Milwaukee R. R. South of Leith on an unimproved county road to the junction with another dirt road, =6 m.=; R. on this road to another junction at =7 m.=, where a vast deposit of small sea shells covers approximately one square mile to a depth of 4 ft., visible evidence that ages ago this region was the bed of a large sea. Only a thin layer of rich black soil covers the deposit, and in plowed fields the shells are easily seen. The practical-minded farmers of this region have found a good use for this gift of the prehistoric sea; they pulverize the shells and feed them to their poultry to provide the calcium in their diet. CARSON, =90.5 m.= (2,289 alt., 356 pop.), is a compact little town on the slope of a hill, dominated by the large, white frame courthouse at the high end of the main street. It is named for two early settlers, Frank Carter and Simon Pederson. Left from Carson an unimproved county road leads to the HEART RIVER, =12 m.= Right on the south bank of the stream to a good camping place, =1 m.= The river, free from rocks at this point, is deep enough for swimming. Across the river (L) to the G. A. Johnson home. On a slight rise in the pasture back of the house is a row of evenly spaced piles of four or five stones, about one-fourth mile long, placed at a right angle to the brink of the hill. This is believed to have been an Indian BUFFALO RUN, in which the Indians placed banners of red cloth or buckskin between the piles, then drove the hunted buffalo toward them. The animals, frightened by the banners, would swerve toward the crest of the hill where in their rush they would stumble down the incline and fall easy prey to the arrows and spears of the hunters. At =103.5 m.= is the junction with ND 31, a graveled highway. Right on this highway to the DOG TOOTH BUTTES (R), =2 m.= From a distance their outlines indicate that they are well named. These buttes were a landmark on the Bismarck-Deadwood trail during the Black Hills gold rush from 1876 to 1884. The stagecoaches with their four-horse teams, and the lumbering ox teams pulling heavily loaded freight wagons, passed just SE. of here, leaving deep ruts which are still visible where ND 31 crosses them immediately S. of the buttes. At =6 m.= on ND 31 is RALEIGH (2,038 alt., 202 pop.), a German community, originated as Dog Tooth Post Office on the Bismarck-Deadwood trail. Purebred livestock is raised on many of the farms in this vicinity. Left at =8 m.= are THREE BUTTES. From the tallest of these peaks a far-reaching view is presented. On a clear day Mandan, 50 m. to the NE., is visible.