[1512] For a description of this substance, see B. xxxiv. c. 24.

[1513] See B. xviii. c. 14.

[1514] See B. xxv. c. 15.

[1515] See B. xxv. c. 17.

[1516] See B. xxv. c. 90.

[1517] See B. xiii. c. 36.

[1518] See B. xxv. c. 27.

[1519] See B. xxv. c. 28.

[1520] See B. xxv. c. 30.

[1521] See B. xxv. c. 31.