investigating the death of dr kolz havana juno june 1 1 W J calhoun tho the united states commissioner who is investigating vesti gating the death in the prison at guanabacoa of dr ruiz was inter viewed today with xe reference ference to the article in the diario de an indirect attack upon the commission by criticising criticizing critic ising articles which have appeared in a washington newspaper over the signature of mr pepper who accompanied mr calhoun to cuba mr calhoun said mr pepper is in no way connected with the commission on the contrary he came to havana on his own account as other correspondents might have come NO secrets of the commission have been divulged noi nas any special information been supplied to him which is not obtainable by other correspondents