Star-land : being talks with young people about the wonders of the heavens (1891)
Ball, Robert S. (Robert Stawell), Sir, 1840-1913 · London ; Paris : Cassell & Co. · leaf 177
lobservation. But he has no aid from magnifying lenses. Allhe can do is to slide a pointer up or down till it is just in linewith the planet as he sees it through the hole opposite. On this circle there are a number of marks engraved, andthere are numbers placed opposite to the marks; it is bythese… … Fig. 55.—Tycho iu his Observatory. The Inner Planets. 163 observer calls out the position when he lias found it, andthere, you sec, is a man ready with a pencil to take downthe observation. Notice also the other astronomer whois looking at the clock. He gives the time, which mustalso be recorded…
Astronomy
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Novo teatro di machine et edificii per uarie et sicure operationi : co[n] le loro figure tagliate in rame é la dichiaratione, e dimostratione di ciascuna : opera necesaria ad architetti, e a quelli, ch[e] di tale studio si dilettano (1607)](https://img.insideoutlibrary.com/img/200/ia-novoteatrodimach00zonc-69-42.webp)
![An illustration from Novo teatro di machine et edificii per uarie et sicure operationi : co[n] le loro figure tagliate in rame é la dichiaratione, e dimostratione di ciascuna : opera necesaria ad architetti, e a quelli, ch[e] di tale studio si dilettano (1607)](https://img.insideoutlibrary.com/img/200/ia-novoteatrodimach00zonc-89-53.webp)
![An illustration from Georgii Agricolae De re metallica : libri XII. Quibus officia, instrumenta, machinae, ac omnia deni[que] ad metallicam spectantia, non modo luculentissimè describuntur, sed & per effigies, suis locis infertas, adiunctis latinis, germanicis [que] appellationibus ita ob oculos ponuntur, ut clarius tradi non possint. ; Eiusdem De animantibus subterraneis liber, (1556)](https://img.insideoutlibrary.com/img/200/ia-gri_000033125008455038-318-220.webp)
![An illustration from Aereoplastes theo-sophicus, sive, Eicones mysticae : rarâ solertiâ, ac sagacitate singulari effictae eæq́[ue] æri incisæ : integram veræ theosophias rationem mirâ dexteritate adumbrantes : euolutione Latinâ ex Sacris Scripturis, sanctis patribus, philosophis, oratoribus, historicis ac poëtis tàm Græcis quàm Latinis Christianis iuxtà atq[ue]; gentibus nunc illuminatæ, ac bonorum bono editæ (1620)](https://img.insideoutlibrary.com/img/200/ia-aereoplatestheos00orae-177-88.webp)
