Rintelen also said that “General Huerta was going to return to Mexico and start a revolution there which would cause the United States to intervene and so make it impossible to ship munitions to Europe. Intervention,” he said, “was one of his trump cards.” Mexico was the happy hunting-ground for pro-German plotters, and the German Ambassador in Mexico, Heinrich von Eckhardt, was the leader in all the intrigues. The culmination of Germany’s effort against America on this continent came on January 19, 1917, when Dr. Alfred Zimmerman, head of the German Foreign Office, sent the following cable to Ambassador von Eckhardt: On the first of February we intend to begin submarine warfare unrestricted. In spite of this, it is our intention to endeavor to keep neutral the United States of America. If this attempt is not successful, we propose an alliance on the following basis with Mexico: That we shall make war together and together make peace. We shall give general financial support, and it is understood that Mexico is to reconquer the lost territory in New Mexico, Texas and Arizona. The details are left to you for settlement. You are instructed to inform the President of Mexico of the above in the greatest confidence as soon as it is certain that there will be an outbreak of war with the United States, and suggest that the President of Mexico, on his own initiative, should communicate with Japan suggesting adherence at once to this plan; at the same time, offer to mediate between Germany and Japan. Please call to the attention of the President of Mexico that the employment of ruthless submarine warfare now promises to compel England to make peace in a few months. ZIMMERMAN. This was almost three months before the United States entered the war. As an example of German blindness and diplomatic folly it stands unrivaled in the annals of the German Foreign Office. Plots against shipping were the deadliest in which the German conspirators engaged. Death and destruction followed in their wake. In direct connection of von Bernstorff and his tools with these outrages the following testimony by an American secret service man employed by Wolf von Igel is interesting. It refers to an appointment with Captain von Kleist, superintendent of Scheele’s bomb factory in Hoboken, N. J.