This leads to deterioration of agriculture and lessens the production.
This deterioration increases with the number of successive copyings.
She appealed to the king's less refined instincts, and Henry's deterioration of character may be dated from his connexion with her.
This was, however, more probably due to the deterioration of the country through desiccation, which has forced the settled population farther westward, where Sana became the centre of the later Himyaritic kingdom.
If, in these circumstances, the food supply be also insufficient, the combination of influences is sure, in course of time, to bring about a physical deterioration of the race.