2iik . « Tt is considered tart, according to the Nishixawa method, the vate of mobility of the sperm for 4a healthy Japanese edult is 70-1005. All the examined instances shoved that the rate was subnorval, Zsrecially, the fact that in 17 of the 24 exs-inations the rate was below 103 indicited a oronovnced cise of necro- srerria 6. Deformity of spermatozoa. spermatozoa, exe ination 2s made under the microscope by using speciziens stained hy the wright, Yon tana Method, while some fresh speci-ens vere “yardnod under a nhase cen Ry The rercentaze o . spermatozoa aefurnity for a healtry Jananzs2 cdvult is less than 155, In the exarined instances the percentages were above 20%, Defor:ity was specially noticeable in the heads of the spermatozoa, ‘Lich ware defective, dwarf, ciant or dicephalous. Cnly in the cases Vhere the number of spermatozoa were less than 1,000, it vas difficult to calculate the percentaze of deformity. Te Conclusion a) These Bikini victins showed a notable decrease in the murber and mobility of spermatozoa as well as the deformity of sperzatozea, oligozocospermia and necrcspermia. b)