As compared with the voluminous literature on the yield and composition of the milk of the cow, that dealing with the milk of the ewe is scanty. Weiske and Kennepohl(i) found the yield from a Southdown-Merino cross from the second to the ninth day in lactation to average 847 g. daily. Fuller and Kleinheinz(2) give the average yield for six breeds as 2-80 lb. daily, when measured by weighing the lamb before and after suckling, and only 1-022 lb. when the ewe was hand milked. They emphasise this failure to obtain a normal yield by hand milking. Neidig and Iddings (3), also using the lamb weights as a measure of yield, obtained an average daily yield for six breeds, from the tenth to the fiftieth day in lactation, of 1542 g. Scheingraber (4) gives results for two East Friesian milk ewes which were allowed to suckle their lambs for 49 and 42 days respectively and then were milked for 179 and 185 days respectively. The total milk yields per lactation, allowance being made for a calculated yield during the suckling period, were 644 and 519-7 litres, or an average of 2-82 and 2-29 litres per day. He also quotes the results for milk ewes from numerous workers in eastern Europe whose figures range from 263-4 kg. in a lactation period of 215 days down to as low as 20 litres in 100 days. Similarly he cites results for wool and mutton sheep which range from 19-27 litres per lactation for a Merino flock up to 69-04 kg. per lactation for a Leine flock. Peirce(5) found an average yield for six Merino ewes of 1205 g. daily in the third week and 650 g. daily in the ninth week in lactation.