The Commission holds that the division agreed on must not be excessive (10 I. C. C. Decis. 1905, p. 385. Harvester Trust and Steel Trust Cases). But there is nothing in such granting or refusing of rate concessions that necessarily violates the interstate law, provided the little roads are common carriers for the public subject to the Act to regulate commerce. If not, the division is held unlawful (10 I. C. C. Decis., March 19, 1904, pp. 193, 505, 545, 546. Lumber). The plea that the division is accorded to the little road because it controls the business of its routing does not explain cases of division between a private railroad that brings logs, etc., to the mill, and the railroad that takes the lumber, etc., from the mill. But through the milling-in-transit principle a division may be arranged between the common carrier by rail that brings the logs to the mill and the carrier that takes the lumber away (10 I. C. C. Decis. 194). Footnote 252: I. C. C. Rep. 1903, pp. 18–22. Footnote 253: Testimony of Mr. Biddle, General Traffic Manager of the Santa Fe, Hutchinson Salt Case. I. C. C. Hearing, Dec. 5, 1903, p. 35. Footnote 254: 10 I. C. C. Decis. 385, 392, Nov. 3, 1904. The Commission held that $3.50 a car to the Illinois Northern, and $3 a car to the West Pullman, would be reasonable for switching charges, and that switching charges in excess of these sums amount to unlawful preferences in favor of the International Harvester Company. Footnote 255: I. C. C. Rep. 1904, p. 21. Footnote 256: I. C. C. Rep. 1904, p. 21; 10 I. C. C. Decis. 385, Nov. 1904. The Commission held that “the divisions are grossly excessive for the services rendered and afford unlawful preference for the U. S. Steel Corporation, which owns the Ill. Steel Co.” Footnote 257: 10 I. C. C. Decis., March 25, 1905, pp. 661, 667–669 _et seq._ Footnote 258: _Ibid._, p. 661. Footnote 259: I. C. C. Decis., 664, March 12, 1904. Footnote 260: _Ibid._, 707, Feb. 7, 1905; also p. 681, March 19, 1904. Footnote 261: The oil cars, dressed-meat cars, etc., of course are in use the year round, and even fruit and vegetables need refrigerator cars in the winter to keep them from freezing as well as in summer to keep them from spoiling. (Sen. Com., 1905, p. 370.) Footnote 262: