It is this.
In reviewing the various classes or types of texts of Polo's Book, which
we shall hereafter attempt to discriminate, there are certain proper names
which we find in the different texts to take very different forms, each
class adhering in the main to one particular form.
Thus the names of the Mongol ladies introduced at pp. 32 and 36 of this
volume, which are in proper Oriental form Bulughan and Kukachin,
appear in the class of MSS. which Pauthier has followed as Bolgara and
Cogatra; in the MSS. of Pipino's version, and those founded on it,
including Ramusio, the names appear in the correcter forms Bolgana or
Balgana and Cogacin. Now all the forms Bolgana, Balgana, Bolgara,
and Cogatra, Cocacin appear in the Geographic Text.
Kaikhatu Kaan appears in the Pauthier MSS. as Chiato, in the Pipinian as
Acatu, in the Ramusian as Chiacato. All three forms, Chiato, Achatu,
and Quiacatu are found in the Geographic Text.
The city of Koh-banan appears in the Pauthier MSS. as Cabanant, in the
Pipinian and Ramusian editions as Cobinam or Cobinan. Both forms are
found in the Geographic Text.
The city of the Great Kaan (Khanbalig) is called in the Pauthier MSS.
Cambaluc, in the Pipinian and Ramusian less correctly Cambalu.