From letter 69 ( 71 ) to letter 139 ( 147 ) chronologically from 1714 to 1720 not a single letter from Usbek relates to the seraglio, which is unmentioned in any guise from letter 94 to 143 ( and even in the edition of 1758 from supplementary letter 8 ( 97 ) to 145.
12.
Certain sequences of letters by a single author develop more fully a particular subject, such as letters 11 14 from Usbek to Mirza on the Troglodytes, letters 109 118 ( 113 122 ) from Usbek to Rhedi on demography, letters 128 132 ( 134 138 ) from Rica on his visit to the library at Saint-Victor.
13.
Certain sequences of letters by a single author develop more fully a particular subject, such as letters 11 14 from Usbek to Mirza on the Troglodytes, letters 109 118 ( 113 122 ) from Usbek to Rhedi on demography, letters 128 132 ( 134 138 ) from Rica on his visit to the library at Saint-Victor.