Abstract: The fission yields of 38 mass chains are measured using radiochemical method as well as direct Ge (Li) γ spectrometry. The fission yields are reported for the first time for mass chains 85, 87, 88, 101, 125, 128, 138, 153 and 161. The yields measured make up 114.4% of the total 200% expected from fiission. A fine structure exists at A = 134 and a small fine structure at A = 101-103. Under the light and heavy peak the total yields are both 100.1%. The peak widths taken at half maximum are 16.7 and 15.8 mass units, and the average mass numbers are 97.5 and 139.3 for the light and heavy peak respectively. The ratio of peak to valley is 179 (99Mo/115A).