New York, Sept. 22. - John Boyd Thacher wlll in all probabllity be withdrawn frora the head of the silver Democratie state ticket. The state committee will meet, and the expected result is the substitution of Wilbur F. Porter of Watertown, the present candidate for lieutenant, in Thacher's place. Tammany leaders at many informal conferences Monday decided to use every effort to have Mr. Thacher withdraw and the twelve state committeemen of this city agreed to demand the withdrawal of Mr. Thacher and to ask for the naming of Wilbur F. Porter. They did not decide whom they would urge for the vacancy in the second place, but it is understood the committee will be free to select any pronounced advocate of Bryan and the Chicago platform without advice from Tammany. How Grany Feel. Senator Thomas P. Grady, who was temporary chairman of the Buffalo convention, feels that Mr. Thacher's letter shows him (Grady) in an unfavorable light liefore the silver Democracy of the state, and made this most significant remark: "I don't care to forecast political happenings, but I am free to say that if Mr. Thacher's letter had been published prior to the convention he would not have been nominated. Tn ray opinión Mr. Thacher is now one of the weakest candidates we oouH name." John C. Sheehan, leader of Tammany hall and representing the twelve state committeemen in that organization, Tuesday telegraphed John Boyd Thacher demanding hls resignation from the head of the state Democratie ticket on the ground that his letter, issued last Sunday night is a stultification of the platform adopted at Buffalo.