5.The difference between motility rating and live sperm percentages obtained by using 1.6 or 1.7% eosin yellowish was found to be sta- tistically insignificant, while the difference in case of the other concentrations was significant (P 0.01). 6.A significant negative correlation (r=-0.857) was found between concentration of the stain and the percentage of live sperm. Consequently 1.6-1.7% eosin yellowish can be considered as those concentrations which can lead to a more or less isotonic solution of the stain, suitable for evaluation of buffalo semen. 128