Denver, June 29. - The Christian Kndeavor movement from the large cities of the Atlantic coast has begun and by Thursday the prairie lines wtll be dotted with long trains bearing excursionists westward. Major S. K. Hooper, general passenger agent of the Denver & Rio Grande road, estimates that the transportation department of the Rio Grande will require flfty-two special trains to carry thejDusiness which will be offered during the last three days of the week. Orders have been given for thirty-one engines to be ready for use out of Denver over the scenic line next Friday. The forces in the repair shops and at división points have been largely augmented in anticipation of the tremendous rush. The Union Pacific, through Colonel George Ady, reports twelve specials engaged for the trip over the line from Chicago and Missouri river points, and the demand for train accommodations at Ogden, over the Central Pacific, is said to be the heaviest in the history of the road. 'Indeed, intimations are given out that the Southern Pacific has attempted more than even such a great system can hope to perform and if latecorners fail to reach San Francisco in time for the Endeavor meeting it will be because the cars could not be secured for carrying the vast throng. The Santa Fe reports eight special trains through La Junta westward Thursday and six on the day following.