[Illustration: Above is the code message from Von Papen’s office in New York to Bernstorff, transmitting a message from Justice Cohalan, of the Supreme Court of New York, advising the Germans upon the best means to make Sir Roger Casement’s revolution in Ireland a success. On page 155 is the message written out and coded for transmission. In English it reads as follows: “No. 335--16 _very secret_ New York, April 17, 1916. Judge Cohalan requests the transmission the following remarks: ‘The Revolution in Ireland can only be successful if supported from Germany. Otherwise, England will be able to suppress it, even though it be only after hard struggles. Therefore, help is necessary. This should consist primarily of aërial attacks in England and a diversion of the fleet simultaneously with Irish revolution. Then, if possible, a landing of troops, arms, and ammunition in Ireland, and possibly some officers from Zeppelins. This would enable the Irish ports to be closed against England and the establishment of stations for submarines on the Irish coast, and the cutting off of the supply of food for England. The success of the revolution may therefore decide the war.’ He asks that a telegram to this effect be sent to Berlin. 5132 8167 0230 _To His Excellency Count von Bernstorff, Imperial Ambassador, Washington, D. C._”] The Hindus in this country, who were plotting with the Germans the revolution that should destroy the British rule in India, used two systems for their secret messages. The first was this _substitution cipher_: 1 2 3 4 5 6 7 1 A B C D E F G 2 H I J K L M N 3 O P Q R S T U 4 V W X Y Z The message, “Leave San Francisco” would be written, in this cipher, as follows: 25 15 11 41 15 35 11 27 16 34 11 27 13 22 35 13 31 by giving each letter of the message the number to the left of it, combined with the number above it. The other system used by the Hindus was a _book code_. They agreed upon a small English dictionary of a certain edition, and wrote from it messages that were also groups of numbers, after this fashion: 625-2-11 27-1-36 45-2-20 and so on. The first figure in each group was the number of the page on which the word would be found, the second figure gave the column, and the third figure was the number of the word in the column, counting from the top of the page.