Beschrijving
Middelburg, J.C. & W. Altorffer, 1890, published by Zeeuws Genootschap der Wetenschappen, 19 pp. original paper binding, interesting treatise on the invention of telescopes by Zacharias Janssen also Zacharias Jansen/Janse or Sacharias Jansen; 1585 – pre-1632 who was a Dutch spectacle-maker who lived most of his life in Middelburg. He is associated with the invention of the first optical telescope and/or the first truly compound microscope, but these claims (made 20 years after his death) may be fabrications put forward by his son.


![[KEILL, J.], Institutions Astronomiques, ou leçons élémentaires d'Astronomie, Pour servir d'introduction à la Physique Céleste, & á la Science des Longitudes, Avec de nouvelles Tables d'Équation corrigées; et particulierement les Tables du Soleil, de la Lune & des Sat](https://www.goltzius.nl/wp-content/uploads/2018/01/66882a-scaled.jpg)
