From Washington.
Strict discipline Inaugurated — Affairs at Harper's Ferry, &c.
Washington, July 31.
--Gen. McClellan, expresses it as his opinion that the present will be a war conducted with artillery, and asks that as many batteries as possible be provided.
Gen. McClellan has issued orders to establish a line of pickets along the Potomac to Harper's Ferry, for the purpose of preventing correspondence between the Marylanders and Southerners.
Washington, August 1.--General McClellan has issued an order prohibiting officers and soldiers from leaving their camps; and from visiting hotels.
At Harper's Ferry all is quiet.
Gen. Banks is occupied in throwing up entrenchments and drilling his men.
Secret movements are in progress to remove all Secessionists from their positions in any of the Departments.
Washington, August 1.--The Conference Committee on the direct tax and the Tarith have been in session twenty-four hours, and are getting up a general bill, which will cover the whole ground.
The correspondent of the Herald ventures the opinion that the Army of the Potomac will not be kept long idle.
The reorganization of the army proceeds with great rapidity, and it is probable Gen. McClellan will-strike as soon as he is ready, regardless of weather.
Julius Bing, a naturalized Englishman, who was captured at Bull Run, has returned via Richmond and Mathias' Point.
He wanted to return via Centreville, but he thought the route was unsafe.
Mr. Bing was a mere spectator of the fight.
The Ellsworth Fire Zouaves were paid off to-day.
Washington, August 1.--Gen. McClellan is examining to see if any incompetency yet remains in the army.
Eighteen Regiments of the three months volunteers have left for home.
Washington, August 1.--Congress will not adjourn this week.
The House will kill the Senate's tariff bill and the Senate will kill the House's direct tax bill.
An elaborate conference is expected.
The House has passed a bill modifying the Sub-Treasury act, and giving authority to Treasurers to receive other than gold and silver in payment of duties.
It is rumored that Gen. Butler has been succeeded by Gen. Wool.
Recent heavy rains have swelled the Potomac, and the fords are difficult to pass.
Sixteen officers of the Garibaldi Legion have gone home. 