Paragraph 4

In the formula in paragraph 3 the value of $D_{y}^{"}$ is given by the formula—

D_{y}^{"} = (A_{y}^{"} + {AA}_{y}^{"}) - (B_{y}^{"} + {BB}_{y}^{"}) + C_{y}^{"} - E_{y}^{"} - F_{y}^{"} + G_{y}^{"} .