抄録
In equation (5.10) on page 487,
eleventh line from the bottom (4/3π3){2(1+····
should be (4/3π3){4(1+····
seventh line from the bottom ····+6ν2}[····
should be ····+16ν2}[····
The author is indebted to Dr. John R. Spreiter for pointing out these errors. They are mistakes in printing and the numerial results in § 6 are not affected by these errors.