Roy B. Kester, Accounting theory and practice… (1922)
“ Similarly, additional investments have an opposite effect, bringing about an increase in closing net worth in the exact amount of the additional investment and so obscuring the true amount of profit or loss for the period. Accordingly, the increase or decrease of net worth as shown by the comparative statements of financial condition must be adjusted in accordance with the proprietor’s withdrawals and additional investments to make a correct determination of profits. ”
