Ex. Did you see ’im go?
Answer. I saw him, but not her.
It is always dropped, at the present day, in the old word hem (Chaucer), meaning them.
Ex. I saw ’em go.
(4.) Individual Notions.
Particular people have particular opinions (frequently wrong ones) as to how words should be pronounced.
I think if you exercise your ear carefully, you will find it a better guide than written statements.
[1]. English in England. By R. Grant White. In the March number of the Atlantic Monthly Magazine, 1880.
[2]. The Greek Classic Poets, 1834.
[3]. The Sacred Books of the East (1879). The Upanishads, page lv.