1. The employers of labor would profit, since they would get abundant labor at low wages. If this increase in the wealth of employers led to an increase in their birth-rate, it would be an advantage. But it apparently does not. The birth-rate of the employing class is probably little restricted by financial difficulties; therefore on them immigration probably has no immediate eugenic effect. 2. The American skilled laborers would profit, since there is more demand for skilled labor in industries created by unskilled immigrant labor. Would the increasing prosperity and a higher standard of living here, tend to lower the relative birth-rate of the class or not? The answer probably depends on the extent of the knowledge of birth control which has been discussed elsewhere. 3. The wages and standard of living of American unskilled laborers will fall, since they are obliged directly to compete with the newcomers. It seems most likely that a fall in wages and standards is correlated with a fall in birth-rate. This case must be distinguished from cases where the wages and standards _never were high_, and where poverty is correlated with a high birth-rate. If this distinction is correct, the present immigration will tend to lower the birth-rate of American unskilled laborers. The arguments here used may appear paradoxical, and have little statistical support, but they seem to us sound and not in contradiction with any known facts. If they are valid, the effect of such immigration as the United States has been receiving is to reduce the birth-rate of the unskilled labor with little or no effect on the employers and managers of labor. Since both the character and the volume of immigration are at fault, remedial measures may be applied to either one or both of these features. It is very desirable that we have a much more stringent selection of immigrants than is made at the present time. But most of the measures which have been actually proposed and urged in recent years have been directed at a diminution of the volume, and at a change in character only by somewhat indirect and indiscriminate means. The Immigration Commission made a report to Congress on Dec. 5, 1910, in which it suggested the following possible methods of restricting the volume of immigration: 1. The exclusion of those unable to read and write in some language. 2. The reduction of the number of each race arriving each year to a certain percentage of the average of that race arriving during a given period of years. 3. The exclusion of unskilled laborers unaccompanied by wives or families. 4. Material increase in the amount of money required to be in the possession of the immigrant at the port of arrival. 5. Material increase in the head tax. 6. Limitation of the number of immigrants arriving annually at any port. 7. The levying of the head tax so as to make a marked discrimination in favor of men with families.