Milk and milk fat production have both been improved by crossing good Holstein or Red Dane bulls with Guernsey cows ( 1). The mature equivalent production ( M. E. ) for 365 days, 3 times milking of Holstein-Guernsey crosses is reported at 17,186 pounds of milk and 805 pounds of fat compared with their dams average of 10,897 pounds of milk and 555 pounds of fat. The Dane- Guernsey crosses averaged 18.149 pounds of milk and 803 pounds of fat as against their clams average of l].] 63 pounds of milk and 546 pounds of fat.