Washington Telegraph

A Washington letter in the N. Y. Courier, says: The Committee of Investigation in the Galphin claim are pursuing the most rigid and searching system of inquiry, not only into the official facts, but in regard to everything attending the passage of the bill in Congress and its allowance before the Executive Departments. Sufficient evidence has already been elicited to exonerate the members of the Cabinet from impropriety, and to establish, beyond all doubt, that the whole story originated in a malicious purpose of personal resentment against Mr. Crawford, because he was stern in enforcing what he believed to be the rules and rights of the military service. On this point the testimony between the accuser and a number of persons referred to, is in direct and positive conflict. Between the respective statements there is no possibility of reconciliation consistent with truth and honor. The public will have to decide upon the weight of evidence. The examination yesterday resulted in establishing the authorship of the libellous letter in the New York Express—which furnished the Union and its confederates with the ammunition for their slanders and imputations upon the Cabinet—upon a person recently discharged from one of the departments for neglect of duty and other causes, which may appear hereafter.