The time required for each of 50 honeybees to forage from a hairy vetch blossom, and the time required for each bee that tripped blossoms to trip a different blossom was measured three times each in two fields. There were highly significant differences in the speed with which bees tripped and foraged from blossoms in the two fields. It appeared that the blossoms in one field were easier to trip than the blossoms in the other. The bees spent less time foraging from the blossoms in the field in which tripping was most rapid, probably because there was less nectar in the blossoms in that field than in the other field. The bees that did not trip blossoms foraged from blossoms more rapidly than the bees that did trip the blossoms. After all known sources of variation had been removed there was a highly significant correlation between the times required for bees to trip and to forage from blossoms; this is interpreted as indicating differences in the efficiency of individual bees. In one of the fields many of the bees foraged through punctures in the blossoms made by carpenter bees. An attempt was made to measure the relationship of the amount of sugar collected by bees per unit time to the attractiveness of competing plants.