To return to the sketchbooks--which performed a twofold office; being not alone the registers of new conceptions, but containing the preliminary studies of the instrumental works into which they were wrought out. The introduction to the excellent pamphlet, “Ein Skizzenbuch von Beethoven, beschrieben und in Auszügen dargestellt von Gustav Nottebohm,” though properly confined by him to the single book which he was describing, is equally true of so many that have been examined with care as to warrant its general application. The following extracts may be taken as true of the greater part of the sketchbooks: HOW THE SKETCHING WAS DONE Before us (he says) lies a volume in oblong folio (_Teatro_) of 192 pages and bearing 16 staves on each page, and, save a few empty places, containing throughout notes and sketches in Beethoven’s handwriting for compositions of various sorts. The volume is bound in craftsman’s style, trimmed, and has a stout pasteboard cover. It was bound thus before it was used or received the notes. [Excepting the number of pages this description applies to most of the true sketchbooks.] The sketches are for the greater part one-part; that is, they occupy but a single staff, only exceptionally are they on two or more staves. [In some of the later books the proportion of sketches in two or more parts is much greater than in this.] It is permissible to assume in advance that they were written originally and in the order in which they follow each other in the sketchbook. When a cursory glance over the whole does not seem to contradict this assumption, a careful study nevertheless compels a modification at times. It is to be observed that generally Beethoven began a new page with a new composition; and, moreover, that he worked alternately or simultaneously at different movements. As a result, different groups of sketches are crowded so closely together that in order to find room he was obliged to make use of spaces which had been left open, and thus eventually sketches for the most different compositions had to be mixed together and brought into companionship. [In some of the books “vi-” not infrequently meets the eye. It was the one of Beethoven’s modes of keeping the clue in the labyrinth of sketches, being part of the word _vide_. The second syllable, “-de,” can always be found on the same or a neighboring page.] “N.B.,” “No. 100,” “No. 500,” “No. 1000,” etc., and in later sketches “meilleur,” are common, all which signs are explained by Schindler as being a whimsical mode of estimating the comparative value of different musical ideas, or of forms of the same. Again Nottebohm continues: In spite of this confused working it is plain that Beethoven, as a rule, was conscious from the beginning of the goal for which he was