vol. 24 p 1335. In this paper, the equation, p 1340, relating Dt to Dr after integration should read See Equation in the PDF File In Table 3, the concentration units are mg/liter, not g/liter, and the day-to-day SD in glucose concentration at 999 mg/liter glucose is 15.1 mg/liter, not 1.51 mg/liter. In Table 4, p 1341, the concentration of Hypaque is expressed in mg iodine/L (mg I/L). p 1343. Table 3 was inadvertently omitted from this paper. It is as follows. See Table in the PDF File The table numbers for Tables 3–6 in the paper as printed should each be increased by one. p 1627. In Table 6, the numbers in the first line should read 580, 2260, 2210, and +50. The "+50" in the second line should be deleted.