[Sidenote: _Its advantages: Euphony_.]

(1) When a word is modified by _a_, _the_, _this_, _that_, _every_,
_no_, _any_, _each_, etc., and at the same time by a possessive noun,
it is distasteful to place the possessive before the modified noun,
and it would also alter the meaning: we place it after the modified
noun with _of_.

[Sidenote: _Emphasis._]

(2) It is more emphatic than the simple possessive, especially when
used with _this_ or _that_, for it brings out the modified word in
strong relief.

[Sidenote: _Clearness._]

(3) It prevents ambiguity. For example, in such a sentence as, "This
introduction _of Atterbury's_ has all these advantages" (Dr. Blair),
the statement clearly means only one thing,--the introduction which
Atterbury made. If, however, we use the phrase _of Atterbury_, the
sentence _might_ be understood as just explained, or it might mean
this act of introducing Atterbury. (See also Sec. 87.)

The following are some instances of double possessives:--

This Hall _of Tinville's_ is dark, ill-lighted except where she
stands.--CARLYLE.

Those lectures _of Lowell's_ had a great influence with me, and
I used to like whatever they bade me like.--HOWELLS