Though I am a member of all the three London photographic societies, I have long been of opinion that there are too many, and that the objects of all are considerably weakened by such a diffusion of interests. If the furtherance of the art and the free and mutual interchange of thought and experience among the members were the only things considered, there would be but one society in London; and with one society embodying all the members that now make the three, how much more good might be done! In the first place, the amounts now paid for rent by the three would, if united, secure an excellent meeting room or chambers, in a central position, for the _exclusive_ use of the society, where the ordinary and special meetings, annual exhibitions, and _soirées_ could be held much more independently than now, and at a cost little or no more than what is now paid for the privilege of holding the ordinary meetings alone. Secondly: If such a place of meeting were secured, then that laudable scheme of an art library, so strenuously advocated by Mr. Wall and Mr. Blanchard at the South London Photographic Society, might be successfully carried into effect. Then a library and a collection of works of art might be gradually gathered together, and one of the members could be chosen curator and librarian, to attend the rooms one evening in the week, or oftener, as circumstances might require, so as to give members access to the library to make exchanges, extracts from bulky books, &c. Thirdly: If the union were effected, and the place of meeting more central, there would be a larger attendance of members, and more spirited and valuable proceedings would be the result. Papers to be read at the regular meetings would be much more certain, and the discussions would be more comprehensive and complete. The members would become personally acquainted with each other, and a much better feeling would pervade the whole photographic community. These, gentlemen, are a few of the advantages which ought to accrue from a union of the three societies; but, if that cannot be effected, by all means let the triumvirate now existing be reduced to a biumvirate. If it be not possible for the "Parent Society" and her offspring to reunite their interests and affection for the common good, surely the other two can, and thereby strengthen themselves, and secure to their members a moiety of the advantages which would result from the triple alliance.