国立情報学研究所 - ディジタル・シルクロード・プロジェクト
『東洋文庫所蔵』貴重書デジタルアーカイブ

« kingdoms » of Persia are in the south, « except... Tunocain, which is near to the Lone Tree »
(cf. Vol. I, 116); when the three Polo brought Kökäčin to Persia, Kaịḥatu ordered them to hand her
over to Ghazan, « who was at that time in the parts of the Dry Tree, on the borders of Persia, to
guard certain passes » (cf. Vol. I, 91); in fact, he had been sent earlier by his father Aryūn « to the
Dry Tree, that is to that country, to guard and to save his land and his people » (cf. Vol. I, 467);
for a still earlier date, we are told that Abaya's lands bordered on the lands of the king Caidu, and
this was from towards the Lone Tree which is called the Dry Tree in the « Book of Alexandre »;
Abaya had sent his son Aryūn « into the country of the Dry Tree as far as to the river Gion (= Amu-
daryā) » (cf. Vol. I, 456). Such a use of the name by Polo, YULE says, « can hardly have been a
mere whim of his own », though no confirmation has as yet been elicited from Oriental sources,
and the « Lone Tree » or « Dry Tree » must have been a well-known landmark. Ghazan had his
headquarters at the Dry Tree when watching the great passes, « of which the principal ones debouche
at Bostam, at which place also buildings erected by Ghazan still exist ». Local tradition placed
at the Dry Tree the decisive battle between Alexander and Darius; « though no such battle took
place in that region, we know that Darius was murdered near Hekatompylos », placed by some
west of Bostam, near Dāmyān, by others east of it, and by FERRIER near Bostam itself. Finally,
Polo mentions after the Lone Tree a « castle », which may be Girdkoh, three para-
sanges west of Dāmyān; it just happens that Girdkoh is connected with a district called « Čīnar »;
« this may be a clue to the term Arbre Sec; but there are difficulties » (Y, I, 148). For all these
reasons, YULE felt inclined to place « meanwhile » the landmark of the Lone Tree in the vicinity
of Bostam or Dāmyān.

The line of this reasoning is not a very straight one, and is not always easy to reconcile with
YULE's former statements on the cypresses of Zoroaster, etc.; moreover, some of the arguments must
be dismissed. The substitution of the death of Darius to the battle between him and Alexander is
arbitrary; I shall express further on my views on the connection occurring in Polo's text between
the battle and the Dry Tree, which can afford no clue to the true location of the said Tree. As to
the « castle », it has certainly nothing to do with Girdkoh; this « castle » is the Alamūt fortress of the
Old Man of the Mountain, the notice of which, in Polo's text, is a digression; and the account ought
afterwards to have started again from « Tunocain », to which, in all likelihood, an early « intelli-
gent » copyist, or more probably Rustichello himself, substituted the « castle », so as to turn Polo's
narrative into a continuous itinerary (see « Mulecte » and « Old Man of the Mountain »).

As to YULE's other arguments, their value will be different according to the solution we adopt
for a question of which YULE said nothing : is Polo's description of the Lone Tree that of an eye-
witness, or is he speaking by hearsay ? If Polo saw the Lone Tree, this tree cannot have stood in
the region of Dāmyān or Bostam, which Polo never visited, but in the north-eastern part of Ḥorasān,
probably in the plain between Tūn and the Kergat-koh. And I must say that Polo's minute descrip-
tion of the Lone Tree, coupled with the indication that it stood alone for 100 miles, except in one
direction where there were trees at 10 miles distance, seems to imply that he is speaking from per-
sonal experience. But the region of the « Lone Tree » was the only portion of the frontier between
the dominions of the Ilkhans and those of their cousins of the « Middle Empire » which Polo had
passed through, and, in my opinion, this is the reason why he used the name of Lone Tree or Dry

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