PHILADELPHIA, June 22.

On Tuesday morning the three battalions of this city and liberties, together with the artillery company, a troop of light horse, several companies of light infantry, rangers and riflemen, in the whole about two thousand, marched out to the commons, and, having joined in brigade, were reviewed by General WASHINGTON, who is appointed Commander in Chief of all the North-American forces by the honorable Continental Congress, when they went through the manual exercise, firings and manoeuvres, with great dexterity and exactness.

London, April 25.

"A steady friend to America called upon me this afternoon, to acquaint me with the following intelligence, communicated to him by ________ this day, which you may rely upon as fact.--- "________ said, that administration on Friday received advices from General Gage to the 18th of March, wherein he acknowledge the receipt of the King's orders to apprehend Messrs. Cushing, Adams, Hancock, & etc. and send them over to England to be tried; but that the second orders, which were to hang them in Boston, he said the Gereral had not then received. The General expressed his fears on the occasion; and, in hopes of their being reversed, he should delay the execution a hile longer; becasue he must, if the orders were fulfilled, come to an engagement--the event of which, he had every reason to apprehen would be fatal to himself and King's troops, as the Massachusetts government has a least 15,000 men ready trained for the oniet {onset?}; and, beside, had every public and private road occupied by the militia, so as to prevent his marching into the country, and which were at the same time ready to facilitate any attempts against the army; in which unwelcome situation he earnestly wished for a reinforcement, if that disagreeable order must be effect.--The General also wrote, that the standard was hoisted by the people at Salem, and multitudes flocked t0 it, which would not be the case, should the Roayal standard be erected, ________ added, that he now believed America would carry their point--that many of the administration were of the same mind, and sincerely wished they had pursued more gentle measure with the colonies. He said Lord North was evidently uneasy, and that government dreaded the news by the April packet--That they suppressed this intelligence from General Gage, becasue of the instant effect it would have on the flocks. He acknowledged the nation was ready for a revolution, if any enterprising genius would step forth, and which would certainly be the case, if blood was once drawn in America. He blames Hutchinson much, and says administration charge him with duplicity, in telling them, they ought to have been more active, and then they would have made the Massachusetts sumit. To others, that administration had gone much farther than he had advised. Be this as it may, he added, that the King consults him, places a confidence in what he says, and has acually (fixed-italic) a salary of 2000lbs per annum (for life-italic) which had much chagrined some of the administration, who adently wished him given up as a sacrifice to both countries."

We hear the New-York Committee have saized a large quantity of DRY GOODS, which were sent there from Georgia, and put into rice tierces.{I have no idea what that word means}

To-morrow morning at seven o'clock, it is said, General Washington will set out for Massachusetts-Bay, in order to take the command of the American army, attended by Major Mifflin one of his aids des camps, and General Lee, who is appointed third in command.

PHILADELPHIA, June 24.

Yesterday morning the Generals WASHINGTON and LEE set off from this city to take the command of the American army at Massachusetts-Bay. They were accompanied from town by the troop of light-horse, and by all the officers of the city militia on horseback, who went no farther than about five miles, when they returned, but the former continued with them, and how far they will go is uncertain.

Major THOMAS MIFFLIN is appointed Aid de Camp to General Washington, and accompanies the General to the camp near Boston. The active and successful part, which this gentleman has taken in the civil and military affairs of the province of Pennsylvania, had endeared him so much to his fellow citizens, that few men have ever left us more universally beloved or regretted.

By a letter from Germany we are informed that prayers are constantly offered up in all the Protestant churches in that counrty, for the success of the Americans in their present righteous struggle with the ministry of Great-Britain.