It is a business and economics book. So much is this the case that I incline to the belief that taxation so graded as to result in a maximum average of say 33-1/3 per cent. would produce at least as great a revenue as a maximum average of 50 per cent. It is one of the oldest principles of taxation that an excessive impost destroys its own productivity. The flood of securities which would be coming for sale in order to escape extreme income taxation would create a grave condition of demoralization in the investment markets of the country, with the resulting inevitable effect upon the country's general business, and upon its capacity to absorb Government loans.