The drawings are not obviously "Oriental," although 22 of them have Arabic captions. Most are delicately done but a few are not. The birds seem to be from India, Australia, New Guinea, etc., but some are common European birds. Background tends to be minimal; occasionally leaves are portrayed delicately.

Most drawings are marked in pencil with a number in the upper right corner and an identification of the bird in English and/or Latin. The identification is a scribble and apparently often guess-work. Occasionally a comment such as "wrong feet" or "made up" has been added. As many as 3 sets of these identifications may appear on a drawing or its mounting, usually partly erased.

Volume 1 consists of title-page and drawings 1-100, interleaved with thick wove paper; volume 2 of title-page and drawings 101-190, interleaved with thick wove paper. These items have all been removed from the volumes and are individually foldered. Most drawings have been guarded: set into new margins. A few have been mounted directly onto thick wove paper.

Spelling errors have not been corrected, but the hand may well have been misread. The use of [?] indicates grave doubt and a [.] indicates an illegible letter in the pdf item-level inventory.