(Born: Braunschweig, Germany, 25 November 1590; Died: Helmstädt, Germany, 26 September 1649) German theologian & philosopher.

Hornjeus was a Lutheran and an expert on ancient philosophy.

Biographical references: ADB: 13, 148-9. • Biographisch-Bibliograhisches Kirchenlexikon: 2, cols. 1062-1063. • NDB: 9, 637-8. • Volkmann, R., "Professor Konrad Hornejus. Philosoph u. prot. Theologe an d. Univ. Helmstedt", Aus unserer Heimat, (Helmstedt), nr. 7/8 (1974), p. 6ff. and nr. 9/10 (1975), p. 2ff.

1. Latin, 1618 [Dissertation].
Dispvtationvm Physicarvm | Decima, | De | Metallis Et | Mediis Minera- | libvs, | Cuiua These | Auspicio diuini numinis | In illustri academia Iulia | Praeside | M. Conrado Horneio | Brvnsvicensi, | Ad diem XV. Kal. Aprilis | Defendere conabitur | Ioannes Christenivs | Holsatus. | [ornament] | Helmastadi, | Typis hæredum Iacoci Lvci. | [rule] | cI{[Backwards c]} I[Backwards c] cXIIX.

4°: A-C⁴; 12l.; [24] p.

Contents: [1 pg], Title page.; [1 pg], Dedication.; [22 pgs], Text.

Very rare. Defended by Johannes Christenius [     -     ], this short dissertation presented on 15 April 1618 describes the rôle of metals and minerals in medical treatments. It was presented at the University of Helmstedt, and was incorporated into Hornejus' Compendivm Natvralis Philosophiæ (1st ed., Helmarstadi, 1618).

Bibliographical references: BL. • VD17: 12:174184N.

2. Latin, 1618 [First edition].
Conradi Horneii Brunsvicensis Compendium Naturalis Philosophiae Quo Explicantur disputationibus XIII. non tantum quae vulgo ex Aristot. eiusq[ue] interpp. tradi hic solent, sed praeterea doctrina de lapidibus, metallis, & mediis mineralibus, deq[ue] plantarum caussis & adfectionibus; Obiter etiam examinantur libb. IIX. schol. phys. P. Rami, earumq[ue] incredibilis absurditas ad oculum demonstratur. Helmaestadi[i], Lucius, 1618.

4°: 137l. Extremely rare.

Bibliographical references: BL. • VD17: 23:641234Y.

Compendium Naturalis Philosophiae, 1624

3. Latin, 1624 [2nd edition].
Compendivm | Natvralis | Philoso- | phiae, | Quo | Explicantur disputationibus | XIII. non tantum quæ vulgò ex | Aristot. eiusq; interpp. tradi hîc solent, | fed præterea doctrina de lapidibus, me- | tallis, & medijs mineralibus, deq; | plantarum caussis & adfe- | ctionibus. | Authore | Conrado Horneio | S. Theologiæ Licent. & Logicæ | in acad. Iulia Professore. | Editio secunda. | Helmarstadi. | Typis heredum Iacobi Lvci, | impensis Zachariæ Raben, | [rule] | cI{[Backwards c]} I[Backwards c] cXXIV.

8°: [16], 477, [2] p.

Very rare. Hornejus' Compendium of Natural Philosophy collects together and reprints 13 dissertations that he had presided over. These writings all commented, elaborated and expanded upon the ancient theories of Aristotle. Besides descriptions of Aristotle's views on metaphysics, ethics and logic there is included the 1618 dissertation that described the medical uses of metals, stones and minerals that Johannes Christenius defended. There are also included substantial material on the uses of plants and animals.

Bibliographical references: BL [no copy listed]. • Gatterer, Mineralogischen Literatur, 1798-9: 1, 24. • LKG: III 45. • NUC [no copy listed]. • VD17: 39:132339G.

4. Latin, 1650 [Another edition].
Compendivm | Natvralis Phi- | losophiæ, | Quo | Explicantur disputationibus XIII. | non tantum quæ vulgò ex Aristot. eiusque in- | terpp. tradi hîc solent, fed præterea doctrina de lapi- | dibus, metallis, & medijs mineralibus, deque | plantarum caussis & adfectio- | nibus. | Authore | Conrado Horneio SS: | Theologiæ D. & P.P. in Acad. Julia. | [ornament] | Francofurti, | Typis Antonii Hvmmii. | Impensis Johannis Hüttneri. | [rule] | M. DC. L.

8°: ):(⁴ A-T⁸ V³; 159l.; [8], 310 p. Head and tail pieces, initials.

Rare. A reprint of the earlier editions with the text reset.

Bibliographical references: BL [1135.d.16.]. • LKG: III 45. • NUC [no copy listed]. • VD17: 39:135064L.

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