I, p.

64, among other Egyptian plants, were first introduced into the Nile valley from India by the Arabs.

The botanical errors occurring in the last volume I was able to correct.

Helm's admirable work on "Cultivated Plants and Domestic Animals" had taught me to notice such things.

Theophrastus, a native of Asia Minor, gives the first description of a citron, and this proves that he probably saw the so-called paradise-apple, but not our citron, which I am therefore not permitted to mention among the plants cultivated in ancient Lydia.