UNIVERSITY OF ILLINOIS PARTMENT OF BACTERIOLOGY LABORATORY OF CHEMISTRY URBANA Dear Lecter , apes fonmaton & a ey te be. oblaced ~ente a~ & lagen Recipe ce acl backernrt. ? GF ZC atlod te weak ot ae wgaie AG 2 Go FOES Demenniclal or reg t , Se PEG woe Wiitent hea An fr eegpar ards tea Oe Yon we a cant eee deur Pt nk ate SEE re het ee nen alee