J.F. Martinet - Katechismus der Natuur - 1778-1779

4 parts and 4 supplements, 1778-1779, together 2707 pages.
With 4 engraved frontispieces and 47 (5 hand-colored) engraved plates. All engravings are present. Contemporary parchment, uniformly bound, handwritten calligraphed spine titles.
Beautiful set in very good condition.
The work was immensely popular in the 18th and 19th centuries and was written in the form of a dialogue between a young man and his teacher.
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Part I: 1, Title engraving, 5, 1, . 1 page large engraving, 5 folding pages
Part II: 3, Title engraving, 2, 426, 2. 4-page engraving. 4 folding.
Part III: 1, Title engraving, 2, 392, 7, 1. 3-page engraving. 5 swinging
Part IV: 2. Title engraving, 510, 32 ex. 28, 12, 15. 3 page size (portrait engraving Martinet) 20 expatriate engravings.