Table of the second proportion
Segments a–f paired between the limits 24 and 18
Headed 'Second', this leaf sets three pairs of ruled segments between an upper value of 24 and a lower value of 18: a 8 with d 16, b 4 with e 3, and c 6 with f 12. Each pair holds a fixed ratio, continuing the run of proportion tables through the notebook. The note is in pencil.
On this page
The 'second' proportion
Between the bounding numbers 24 above and 18 below, the page pairs a 8 with d 16, b 4 with e 3, and c 6 with f 12. The rows compare the labelled magnitudes as ratios, the heading marking this as the 'second' in the series.