lateral expansion of a principal line; a road linked to or issuing from a principal range, yet not only incident of it and not a mere spur or side-track, not merely one constructed just to facilitate the business enterprise associated with the chief railway, but made to have a small business of its very own in, the transport of individuals and home to and from locations perhaps not achieved because of the principal range. Akers y. Canal Co.. 43 X. J. Law, 110; Biles v. Railroad Co., 5 clean. 509. 32 Pac. 211; Grennan v. McGregor, 78 Cal. 258, 20 Pac. 559; Newhall v. Railroad Co., 14 111. 274; Blanton v. Railroad Co., 86 Va. 618, 10 S. E. 925.