In the alphabetization of a catalogue the prefixes in personal names, even when printed separately, are to be treated as if they were joined; thus:—

De Montfort.
Demophilus.
De Morgan.
Demosthenes.
De Quincey.
Des Barres.
Du Chaillu.

In the case of compound words a different plan, however, is to be adopted. Each word is to be treated as separate, and arranged accordingly. The Index Society rule is as follows: "4. Headings consisting of two or more distinct words are not to be treated as integral portions of one word; thus the arrangement should be:—

} {
Grave, John Grave at Kherson
Grave at Kherson Grave, John
Grave of Hopenot Gravelot
Grave Thoughts Grave of Hope
Gravelot Gravesend
Gravesend Grave Thoughts"

Mr. Cutter enters very fully into this point of arrangement in his rules.

It is a very frequent mistake to overlook the fact that the Christian name placed after a surname is merely there for the sake of convenience, and to make it take its place with the words that follow in their natural position. For instance, in the above examples John Grave stands at the head, because Grave is the only portion that can be considered in the alphabet. If, however, there was a Charles or a Henry Grave, they would take their position above John Grave, because their Christian names are all in the same category.

The order in which the entries under an author's name should be arranged is dealt with in the British Museum rules LXIX. to LXXVII., but it is not necessary to quote all these in this place.

The Library Association rules put the matter very succinctly:—

"38. The works of an author are to be arranged in the following order:—

"a. Collected works.

"b. Partial collections.

"c. Individual works in alphabetical order of titles, under the first word not an article or a preposition having the meaning of 'concerning.'

"Translations are to follow the originals in alphabetical order of languages."

The Cambridge Rule is as follows:—