Ke Ho Lee and Kun Hyung Chang (Army Research and Testing Lab.): Studies on koji for optimum condition of growth and identification of Aspergillus spp. Cpart 2). Kor. J. Microbiol. Vol. 2, No. 1, p. 17-18 (1964). The experiments reported in this paper are concerned with the identifications, the growth conditions and lethal temperatures of the three strains of Aspergillus spp. which have been isolated from the soils and Meju (fermented soy bean in Korea). The results obtained in the light of the manual of Raper and Thom for identification of the Genus, Aspergillus, have been shown that the three strains of Aspergillus spp. are pertained to Aspergillus flavusoryzae group. The optimum temperature, pH and the lethal temperatures of the Aspergillus spp. have been measured.