We will first consider the requirements of the constitution; and here it may be premised that section 6 of article 15 imposes no greater obligations upon the company than the common law would have imposed without it. Every common carrier must carry for all to the extent of his capacity, without undue or unreasonable discrimination, either in charges or facilities. The constitution has taken from the legislature the power of abolishing this rule as applied to railroad companies. So in section 4 there is nothing specially important to the present inquiry except the last sentence: 'Every railroad company shall have the right with its road to intersect, connect with, or cross any other railroad.' Railroad companies are created to serve the public as carriers for hire, and their obligations to the public are such as the law attaches to that service. The only exclusively constitutional question in the case, is, therefore, whether the right of one railroad company to connect its road with that of another company, which has been made part of the fundamental law of the state, implies more than a mechanical union of the tracks of the roads so as to admit of the convenient passage of cars from one to the other. The claim on the part of the Denver & New Orleans Company is that the right to connect the roads includes the right of business intercourse between the two companies, such as is customary on roads forming a continuous line, and that if the companies fail or refuse to agree upon the terms of their intercourse a court of equity may, in the absence of statutory regulations, determine what the terms shall be. Such appears to have been the opinion of the circuit court, and accordingly in its decree a compulsory business connection was established between the two companies, and rules were laid down for the government of their conduct towards each other in this new relation. In other words, the court has made an arrangement for the business intercourse of these companies such as, in its opinion, they ought in law to have made for themselves.