Ohicamo, Sept. 24.—Another oold blooded and unprovoked murder win committed here lust night. James P. McWilliams, u young man about _ 18 yours of ago, employed as a compositor hi the Times office, was shot and almost instantly killed, while talking along Clinton near Adam St., about midnight, with it companion, by one of four men to whom be had spoken civilly, and with whom they had no qnar-! ret The assassin and his companions ! osenped, and up to an early hour th s morning they had eluded detection or arrest.jjATKit.—Six »tooe-eutters have been arrested ou suspicion of being the murderers uf McWilliams last night. Feeling runs very high over the tragedy. The mime of the' young man charged with the murder of McWilliams, last mailt. is Thomas Collins.