Only the 1st Tractatus of t. 1 has general title. The other parts have individual t.p.'s: Tractatus secundus, De natvrae simia seu technica macrocosmi historia. Oppenheimio : Aere Iohan-Theodori de Bry : Typis Hieronymi Galleri, 1618; Tomvs secvndvs De svpernatvrali, naturali, praeternaturali et contranaturali microcosmi historia, in tractatus tres distributa. Oppenhemij : Impensis Iohannis Theodori de Bry : Typis Hieronymi Galleri, 1619; Tomi secvndi, tractatus primi, sectio secunda, De technica microcosmi historia [S.l. : s.n., n.d.]; Tomi secundi, tractatus secundus, De praeternaturali utriusque mundi historia. Francofurti : Typis Erasmi Kempfferi : Sumptibus Joan. Theodori de Bry, 1621.

Tomus 2 ends with the 1st Sectio of the 2nd Tractatus. It was to have contained 3 tractatus, but was never completed.

Collation: Tomus 1, Tractatus 1: [4], 106 (i.e. 206), [10] p., [4] leaves of plates (2 of them double leaves hinged at centerfold). Tomus 1, Tractatus 2: 788, [10] p. (last 2 p. blank), [9] leaves of plates (1 folded, 4 double leaves hinged at centerfold). Tomus 2, Tractatus 1: 277, [2] p. (first 2 p. and last 2 p. blank). Tomus 2, Tractatus 1, Sectio 2: 191, 13. Tomus 2, Tractatus 2, Sectio 1: [12], 199, [1] p. (last p. blank), [2] leaves of plates (double leaf hinged at centerfold).

Signatures: t. 1, Tractatus 1: A-Bbp4s Ccp8s (double-leaf plate, hinged at centerfold after A2 and printed with p. 3 on recto of 1st leaf and p. 6 on verso of 2nd, is signed 'A2'). Tomus 1, Tractatus 2: A-Gggp4s Hhhp2s Iii-Hhhhhp4s (V2 missigned 'V'; Bbbb2 missigned 'Bbb2'). Tomus 2, Tractatus 1: A-Mmp4s (R3 missigned 'R2'). Tomus 2, Tractatus 1, Sectio 2: A-aap4s bbp6s. Tomus 2, Tractatus 2, Sectio 1: A-Rp6s Sp4s.

Illustrated with numerous cuts in text as well as plates, etched and engraved, and with woodcut head and tail pieces and initials. Both t.p.'s of t. 1. have ornamental frames with letterpress text. That of Tractatus 2 has signature: M. Merian sculp. T.p. of tomus 2, Tractatus 1 is completely engraved. T.p. of t. 2, Tractatus 1, Sectio 2 has etched vignette with letterpress. T.p. of t. 2, Tractatus 2 is letterpress with engraved vignette signed: T.B. fe.

Errata lists interspersed throughout text.

Vol. 2 of Library's copy is bound with: Anatomiae amphitheatrum / authore Roberto Fludd. Francofurti : Sumptibus Iohannis Theodori de Bry, 1623.

Hogart, R.C. Alchemy, 70, 71

Yale. Alchemy, 74, 83

Library's copy of t. 1, Tractatus 2 is 2nd ed. (Francofvrti : Sumptibus haeredum Johannis Theodori de Bry : Typis Caspari Rötelii, anno 1624).

Library's copy lacks: t. 1, last leaf (blank); t. 2, Tractatus 1, p. 81-88 and 91-94 (blank leaves supplied by binder), and the initial blank leaf.

In Library's copy, cut on p. 200 of t. 1, Tractatus 1 is overlaid with another etching.

Binding, t. 1: velum over pasteboard; spine title in brown ink, over incompletely effaced earlier title: Fludd Utriusque Cosmi Historia cum Figures I.T. DeBry. Tomus 2: velum over beveled boards; top stamped in gilt with 3 armorial shields, miter and crozier in double oval containing the words: Maximilianvs D.G. Abbas Lambacensis [Lambach, Austria] C.M. Cons; spine tooled in gold (now largely wanting): Roberti Flvdy historia microcosmi; lower spine has "390" handwritten in brown ink; lower board has 2 leather straps with engraved brass clasps, corresponding metal posts on foredge of upper board (one now wanting).