pecuniary gain. At the same time the effect on consumption is to concentrate it upon the lines which are most patent to the observers whose good opinion is sought; while the inclinations and aptitudes whose exercise does not involve a honorific expenditure of time or substance tend to fall into abeyance through disuse. Through this discrimination in favor of visible consumption it has come about that the domestic life of most classes is relatively shabby, as compared with the éclat of that overt portion of their life that is carried on before the eyes of observers. As a secondary consequence of the same discrimination, people habitually screen their private life from observation. So far as concerns that portion of their consumption that may without blame be carried on in secret, they withdraw from all contact with their neighbors, hence the exclusiveness of people, as regards their domestic life, in most of the industrially developed communities; and hence, by remoter derivation, the habit of privacy and reserve that is so large a feature in the code of proprieties of the better class in all communities. The low birthrate of the classes upon whom the requirements of reputable expenditure fall with great urgency is likewise traceable to the exigencies of a standard of living based on conspicuous waste. The conspicuous consumption, and the consequent increased expense, required in the reputable maintenance of a child is very considerable and acts as a powerful deterrent. It is probably the most effectual of the Malthusian prudential checks.