The relations with Costa Rica were most unsatisfactory, and the government took action to meet any possible emergency. Pursuant to its decree of August 28th, congress assembled September 16th, when President Quadra's message made known that events had taken place calling for an abandonment of the policy he had hitherto pursued of absolute abstention from interference in the affairs of the other Central American states.[XXIII-31] His administration reported the intrigues of President Guardia of Costa Rica with discontented Nicaraguans for its overthrow. It was generally believed that a disturbance of the public peace was impending, and that Costa Rican money had circulated among the men concerned in the plot.[XXIII-32] These men, some of whom were officers in the service of Nicaragua, concealed themselves, and a number of them went to Costa Rica to tender their services to the enemy of their country. Meantime a body of armed men raised by the reactionary party of Central America made its appearance in Honduras, which alarmed the governments of Guatemala and Salvador. These powers represented to Nicaragua the movements to be unquestionably the work of Costa Rica, proposing an alliance against the latter.[XXIII-33] A defensive alliance was concluded on the 26th of August, the plenipotentiaries being Anselmo H. Rivas and B. Carazo. This treaty was approved by the three governments.[XXIII-34] It contained, besides, two other clauses; namely, the allied powers were to endeavor to bring about a settlement of the boundary question between Nicaragua and Costa Rica, and coöperate toward the reorganization of Central America under a single government.[XXIII-35] Congress closed the session on the 15th of October, and shortly after the government was apprised of the departure from Puntarenas, Costa Rica, on the vessel named _Tigre_, of an expedition of Nicaraguans under Tinoco bound to Nicaragua.[XXIII-36] The expedition landed on the 3d of November, not in Nicaraguan territory, but in San Bernardo, a small port of Honduras. Nicaragua at once sent a force to the frontier, and Minister Delgadillo started for Honduras to obtain permission from the government to pursue the invaders within her limits, which being granted, the Nicaraguans marched from Somotillo into Honduras, and acting in accord with another force from Salvador, the invaders abandoned Corpus, and repaired to Tegucigalpa, where Tinoco capitulated.[XXIII-37] The Nicaraguan government's force then returned home.[XXIII-38] The elections for president and members of congress took place within the last three months of 1874 under no hindrance, and without any serious disturbance of the peace.[XXIII-39] Quadra's message of January 13, 1875, announced that public confidence in a continued peace was not yet fully restored; but a disposition to work and maintain order was taking deep root among the masses.[XXIII-40] [Sidenote: PRESIDENT CHAMORRO.]