Thus the rebate as an evil in transportation, even since amendment of the law in 1906-1910, while under control, is still far from being eradicated. Favoritism lurks in every covert, assuming almost every hue and form. Practices which outwardly appear to be necessary and legitimate, have been shown to conceal special favors of a substantial sort. Among the latest forms, undue extension of credit may be mentioned. It appeared, for instance, in 1910 that the Hocking Valley Railroad was favoring the Sunday Creek Coal Company to the extent of credit for transportation on its books to the amount of $2,400,000.[189] Another device which amounted to favoritism whether so intended or not, has been brought into court upon prosecution of the so-called Beef Trust. Substantial concessions in the rate from Kansas City to various foreign countries prevailed by reason of the fact that long time contracts for shipments at an established rate continued after a new higher general tariff had been put into effect. This increase of rates in general, leaving the trust rates at the old figure, of course created an undue and unlawful preference.[190] The chapter might be further amplified by details concerning "substitution of tonnage at transit points;"[191] excessive allowance for claims, and, as in a recent important case against the New York Central, exorbitant rates paid for advertising in a theatrical publication, in order to secure transportation for an itinerant troupe of travelling players.[192]