It is not an uncommon occurrence to have dairy cattle breeders question whether or not cows with supernumerary are superior in producing capacity to those that do not show the polythelial condition. As was described in an earlier paper, Gifford (2) these extra teats or supernumeraries are found quite commonly in dairy cattle and are usually of three types. They have been described as caudal, or those found in the rear of the normal teats, intercalary or those found between the normal, and ramal or those that are ramifications or branches of the normal. In Russia and some other European countries, it has been reported that there is a prevailing belief among dairy cattle breeders that the presence of supernumeraries is evidence of abundant milk supply. In other words, the observations of these breeders have led them to believe that there is closely linked with the genes for the character capacity for large amounts of milk, the genes responsible for the development of the polythelial condition. Furthermore, their conclusion might indicate that the genes responsible for the development of these two characters are so closely linked that they appear together in a majority of instances. In fact, Ivanova (3) found that the cows possessing supernumerary had produced 388 kilograms or about 15 per cent more milk than those with the 1normal number of when she compared the records of 251 cows that exhibited this polythelial condition with 444 cows with the normal number. These cows were observed in 25 dairy herds on farms and at breeding stations in U. S. S. Russia. On the other hand, Juler (4) working independently of Ivanova made a similar investigation on the records of the ~ngler cattle in Germany and the results were quite contradictory. Juler failed to find a significant difference between the annual production of milk and butterfat of the two groups. Leroy (5) substantiated Juler 's findings when he examined 90 cows for the presence or absence of supernumerary and then compared the milk production of the two groups, taking as a basis for his comparison, the average mature or mature equivalent records for three successive lactations. The group of cows with the normal number of actually produced considerably more milk on the average than the other groups. The author