_Goat 3_: Control period, 896 gm. milk av. daily yield for 6 days. Nutrolactis period (30 c.c. Nutrolactis mixed with oats), 658 gm. milk av. daily yield for 9 days. Control period, 666 gm. milk av. daily yield for 5 days. _Dog 1_: Control period, 176 gm. milk av. daily yield for 7 days. Nutrolactis period (8 c.c. Nutrolactis by stomach tube), 55 gm. milk av. daily yield for 12 days. _Dog 2_: Control period, 189 gm. milk av. daily yield for 6 days. Nutrolactis period (8 c.c. Nutrolactis by stomach tube), 72 gm. milk av. daily yield for 11 days. _Dog 3_: Control period, 93 gm. milk av. daily yield for 8 days. Nutrolactis period (8 c.c. Nutrolactis on bread), 17 gm. milk av. daily yield for 5 days. _Dog 4_: Control period, 28 gm. milk av. daily yield for 7 days. Nutrolactis period (8 c.c. Nutrolactis by stomach tube), 47 gm. milk av. daily yield for 6 days. (10 c.c. Nutrolactis by stomach tube), 43 gm. milk av. daily yield for 8 days. Control period, 41.5 gm. milk av. daily yield for 6 days. Nutrolactis period (10 c.c. Nutrolactis by stomach tube), 33.5 gm. milk av. daily yield for 4 days. _Dog 5_: Control period, 67 gm. milk av. daily yield for 6 days. Nutrolactis period (10 c.c. Nutrolactis on bread), 81 gm. milk av. daily yield for 6 days. _Dog 6_: Control period, 40 gm. milk av. daily yield for 5 days. Nutrolactis period (10 c.c. Nutrolactis by stomach tube), 33 gm. milk av. daily yield for 8 days. Control period, 26 gm. milk av. daily yield for 4 days. _Dog 7_: Control period, 283 gm. milk av. daily yield for 9 days. Nutrolactis period (10 c.c. Nutrolactis by stomach tube), 155 gm. milk av. daily yield for 15 days. (15 c.c. Nutrolactis by stomach tube), 82 gm. milk av. daily yield for 6 days. Control period, 33 gm. milk av. daily yield for 3 days. _Dog 8_: Control period, 238 gm. milk av. daily yield for 8 days. Nutrolactis period (20 c.c. Nutrolactis on bread), 223 gm. milk av. daily yield for 4 days. (20 c.c. Nutrolactis on bread), 46 gm. milk av. daily yield for 6 days. _Dog 9_: Control period, 223 gm. milk av. daily yield for 6 days. Nutrolactis period (10 c.c. Nutrolactis on bread), 178 gm. milk av. daily yield for 15 days. (15 c.c. Nutrolactis on bread), 146 gm. milk av. daily yield for 5 days. COMMENT AND CONCLUSION Goat 1 had already been lactating for over two months, and the yield was gradually decreasing at the time the observations were begun. The administration of galega did not check this decrease. Goat 2 should have been a very favorable subject, for the kid was about a week old at the time the observations were begun. Both galega and Nutrolactis caused a decrease in milk yield of this animal. This decrease is perhaps partly due to the animal’s distaste for the drugs and her consequent failure to eat as well as during the control periods.