Two more "Pearce" letters were received on July 13 by an afternoon newspaper of New Orleans and by its Chief of Police, saying that Erich Muenter had taught the writer the use of explosives. On the same day the Samland of the Atlantic Transport Line and the Strathlay, chartered by the Fabre Line, survived attempts to destroy them by fire bombs, and on July 15 "Pearce" threatened in another letter to destroy the Rochambeau. A bomb thought to be intended for the Orduna in a car loaded with coal consigned to the Cunard Line was discovered at Morrisville, N.J., on July 18. The Washington Times, the Philadelphia Public-Ledger and the Brooklyn Eagle received on July 16, 19 and 20, respectively, letters from "Pearce" declaring that henceforth persons leaving America on British ships would do so at their peril, and harking back to the German Embassy's warning before the Lusitania was torpedoed. On July 26 an SOS call was received at the Fire Island station, at the Brooklyn Navy Yard, and by the coast guard ship Mohawk, but the distressed ship's appeal for help was broken off before her name or position could be given. "Pearce's" letter to The Brooklyn Eagle reads as follows: "Sir: You people of Brooklyn have already had one experience with the work of our men, and so, perhaps, it will be unnecessary to say more than a few words of warning. The Kirkoswald affair is still fresh in your memory; therefore, we will not waste words discussing this matter. The purpose of this communication is to warn the American citizens living in your vicinity to keep clear of British vessels sailing from Brooklyn, New York, New Orleans, Savannah, Newport News, and Montreal. Our men are now operating from each of these ports, and Americans will do well to heed this warning ere it is too late. "The Imperial German Government derives no satisfaction or profit from the killing of neutral Americans, and we are instructed to go to great lengths in order to give timely warnings to all Americans who contemplate voyages to Europe within the next two months. The explosive operations will supplement the submarine operations, which have proved inadequate to prevent the enemy from importing munitions from America. "We earnestly advise Americans who find it imperative to travel to Europe to sail only on vessels flying the American flag. Such steamers as those of the American Line, for instance, will be perfectly immune from either submarine or explosive operation. The Imperial German Government will, if requested, offer no objection to the American Government pressing into service the interned German vessels if the American vessels are found to be unable to accommodate the traffic to Europe. By publishing this warning American lives may be spared. "The circumstances under which this communication is written make it impossible for us to affix our proper signatures; therefore, we trust that you will accept for a signature our pen name. "PEARCE." Devotion to the Kaiser