But it is easy to make too much of the supposed 'difference.' Certainly it has left no trace in Mrs.Browning's letters which are now extant.

There is no sign in them that the divergence of opinion produced the slightest discord in the harmony of their life.

No doubt Mr.Browning felt strongly as to the character of some of the persons, whether mediums or their devotees, with whom his wife was brought into contact, and he may have relieved his feelings by strong expressions of his opinion concerning them; but there is no reason to lay stress on this as indicating any serious difference between himself and his wife.
It has seemed necessary to say so much, lest it should be supposed that any of the omissions, which have been made in order to reduce the bulk of the letters within reasonable limits, cover passages in which such a difference is spoken of.

In no single instance is this the case.

The omissions have been made in the interests of the reader, not in order to affect in any way the representation which the letters give of their writer's feelings and character.