During the bonanza farm era (_see_ AGRICULTURE AND FARM LIFE) Casselton was headquarters of the huge Dalrymple farm, which made it a metropolis of the Red River Valley. One of the earliest practical uses of the telephone in the United States, and what may have been the introduction of the instrument into this State (_see Tour 1_), was made in 1876 on the Dalrymple farm. Oliver Dalrymple had taken advantage of low prices occasioned by the panic of 1873 to buy 100,000 acres of Red River Valley land owned by the N. P. Ry. and had set out to demonstrate that the land was valuable for farming. The first year he seeded 1,280 acres and harvested 32,000 bu. of wheat. By 1878 he was farming 13,000 acres and by 1895, 65,000 acres. His land was divided into subfarms, each with a superintendent and foreman, and all using the most modern farm equipment obtainable. Dalrymple, on a visit to the Philadelphia Centennial in 1876, became interested in the newly invented telephone, and at the close of the fair purchased several of the instruments for installation on his subfarms and headquarters farm at Casselton. Among the churches in Casselton is one maintained by a small group of Moravians, a German religious sect that came to the State during the early years of settlement. On ND 18 at =18 m.= to the D. H. HOUSTON FARM, where the principle of the roll film camera was developed. Houston, a native of Wisconsin, had already invented one camera when he homesteaded in North Dakota in 1869. Although he acquired 6,000 acres of land and became one of the early bonanza farmers, he continued his experiments in photography, and in 1881 developed the principle of the roll film camera, selling his patent to George Eastman. It has been said that Houston named his device "kodak" for North Dakota, but the generally accepted story is that Eastman himself coined the word because he desired a catchy, easily remembered name that could be used in any language. Houston's inventive interests included agricultural improvements, and in the 1880's he developed an improved bluestem wheat which, producing four to five bushels more per acre than other varieties, was soon in great demand throughout the Wheat Belt. He also patented improvements on the disc plow. At =26.5 m.= is the junction with a graveled road. Right on this road is WHEATLAND, =2 m.= (991 alt., 300 pop.), a quiet, pretty village named for the vast wheat acreage formerly seeded on the bonanza farms in the area. At =30.5 m.= the highway passes over a noticeable rise of land. This is Herman Beach, the western shore of ancient Lake Agassiz, which in glacial times covered 100,000 sq. m. and lay over the eastern portion of the State, reaching from Lake Winnipeg in Canada to Lake Traverse in South Dakota. It is estimated that when this gravelly ridge was formed by the waves of the lake, the water at the present site of Fargo was 175 ft. deep. BUFFALO, =37.5 m.= (1,201 alt., 242 pop.), is named for Buffalo, N. Y.