Havana, March 8.- The American board of inquiry wlll end its sessions in Havana Thuisday and start immedjately for W-ashington to submit its report. The wrecking tug Right Arm left Havana at 1 p. m., but no informatíon can be obtained about her destination. It is said that she carries some important documents. Señor Leoncio Vareta is going to Washington as the repiesentative of the Spanish government to negotiate the treaty of commerce between the United States and the Cuban colonial government. An American schooner is said to have been stopped by a Spanish warship on the southern coast of Cuba. The authorities here say that It was a filibustering vessel, but no more details can be obtained officially or are allowed to be sent by the press censor. There is great excitement in Havana. The volunteers are wildly enthusiastic over the reportsof war, and they have had cannon ex'ercises at Cabanas fortress to test the new big guns. The volunteers declare that they will defend Havana unlil the last of them is dead. The firihg of cannon by the volunteers frightened many Havana families and foreign residents. The cause of the shots was not explained. The Spanish pólice are making more arrests. At 3 o'clock in the mornintf eight well-known rosidents of this city vvere driven out of their homes and sent to Cabanas fortress. The press here comments upon the resignation af the American consul at Sagua. Mr. Barker, and says he was too uncompromising an American for a diplomatic post in Cuba. He is charged also with havlng tried to provoke a rupture of the relations between the two countries, and of helping the insurgents instead of the starvine pacíficos.