Finally, when a Tartar falls from his horse in battle, he ought immediately to be taken or slain; as when on foot even they are excellent archers, and destructive to men and horses[2]. [1] The word here used in the Latin, _balistais_, is probably corrupted in transcription for _balistariis_; and may either mean cross-bow-men, or men for working balistae, the ancient artillery, if the expression be allowable. Arcubalistarii is the appropriate middle age Latin for men armed with cross-bows.--E. [2] Our good minorite seems in this chapter to have studied the old proverb, _fas est ab hoste doceri_; but except in the leading political advice of the section, he might have been better employed in following the adage of _ne sutor ultra crepidam_.--E. SECTION XIX. _Of the Journey of Friar John de Plano Carpini, to the First Guard of the Tartars_[1]. Setting out, by command from the apostolic See, upon our journey to the Tartars, lest there might arise danger from their proximity to the church of God, we came first to the king of Bohemia, with whom we were acquainted, and who advised us to travel through Poland and Russia, because he had kinsmen in Poland, through whose assistance we might be enabled to travel in Russia; and he supplied us with recommendatory letters and passports, giving us free passage as his charges through his dominions, whence we proceeded to the court of Boleslaus, duke of Silesia, his nephew, who was likewise known and friendly to us. He treated us in the same hospitable manner, and transmitted us free of expense to Conrad, duke of Lautiscia, or Masovia, where, by God's grace, Wasilico[2], duke of Russia, then was, from whom we fully learned the arts of the Tartars, as he had sent messengers to them who were already returned. Learning that it was necessary for us to make presents, we caused some skins of beavers and other animals to be purchased with part of the money which had been given us in charity to defray our expences; and we received more of the same skins from duke Conrad, from Grimislava, duchess of Cracow, from the bishop, and from certain nobles of that place. And at the request of the duke, bishop, and nobles of Cracow, Wasilico conducted us into his country, and entertained us there for some days at his expense. Likewise he convened his bishops at our request, to whom we read the Pope's letters, admonishing them to return into the unity of the church, adding our own exhortation to the same purpose. But because duke Daniel, the brother of Wasilico was absent at the court of Baatu, they could not then give a satisfactory answer.