By the evening of the 5th of April, all were at Virgin Bay, and the embarkation was commenced. Most of the American residents about the Transit road, thinking from the preparations that the Meridional Department was to be abandoned, flocked with the troops aboard the San Carlos. When all were on the steamer she was ordered to the San Juan river, and the morning of the 6th found her off San Carlos Fort. Captain Linton’s company stationed at that point was embarked, and the steamer proceeded down the river to Toro Rapids. A company intended to garrison Castillo Viejo was sent down to relieve the force previously there; and when the returning company had reached the San Carlos, she was ordered to Granada. On the morning of the 8th, the steamer anchored off Granada, and the troops were rapidly disembarked. Thus the movement northward was, for a time, concealed from the people of the Meridional Department, among whom the enemy had numerous spies, and the impression was temporarily created, that the Americans intended to move either out of the country or toward San José. The enemy seems to have adopted the former opinion. It seems that Mora, after his success at Santa Rosa, was pressing on toward the frontier; but hearing Walker had occupied Rivas in force, he stopped to watch his adversary. Then seeing the preparations for abandoning the department, he allowed the embarkation of the Americans almost in his very presence. Of course, with the Legitimists in and about Rivas, it was far easier for Mora to get reliable news than for the Nicaraguan general. As no villages or even country-houses were to be passed, it was not difficult to bring a force of three thousand men to the neighborhood of the Transit road, without its being at all known in the department. Walker had no sooner left Virgin Bay, than Mora moved forward with a view of occupying Rivas and the Transit road.