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The Recent Progress of Astronomy: Especially in the United States was a book by Elias Loomis and published in 1856. It was about the history of astronomy, providing valuable information about the advancements and discoveries in the field during the early nineteenth century. It has 502 pages.

This fond includes an introduction exploring the Sun's significance in relation to life and activities on Earth. Additionally, it comprises five chapters covering topics such as the distance and dimensions of the Sun, methods and apparatus for studying the Sun's surface, the spectroscope and solar spectrum, and an examination of sunspots. The book is part of International Scientific Series, Vol. XXXIX

This item was a stellar object requires two coordinates to locate it on the sky, as the sky is a two-dimensional plane. One of these coordinates known as declination. This is similar to the two co-ordinates viz. latitude and longitude, defining a point on the surface of the earth. The transit circle is an instrument used to determine the declination of stellar onjects. It consists of a circular scale kept perpendicular to the rotating axis of a telescope tube.

This item was an instrument used in surveying land, alignment, testing, and calibrating optical Instruments. It is basically a refracting telescope. Whose optical elements tilt angles with high accuracy of the order of arcsecs.

The title of the book " Theoric analytique du system du Monde" translates to " Analytical Theory of the World System ". There are two volumes of this book. The first volume has seven chapters, and the second volume consists of 9 chapters. This book was written by G De Pontecoulant and published in 1829.

This item is Analytical Theory of the World System volume 2, written by French astronomer Gustave de Pontecoulant and published in 1829. It covers topics such as the movements of celestial bodies, equations of motion, and other aspects of celestial mechanics. It has 506 pages.

French astronomer Gustave de Pontecoulant wrote the Analytical Theory of the World System volume 3, part I has pages from "i-xxiv, 1 - 230" and part II has pages from "231 - 566". It was published in 1834. It contains mathematical and scientific explanations of various phenomena related to celestial bodies and their movements. The book covers topics such as the orbits of planets, perturbations caused by gravitational influences, calculations of constants and coefficients, expressions for perturbing forces, and equations for determining the elements of orbits.

The book Traite experimental of de L'electricite et du Magnetisme transalates to Experimental Treatise of Electricity. M.Becquerel, of the Academy of Sciences of the Institute of France, wrote this book. It is published in 1840

The item is a 6 inch transit circle. The transit circle is an instrument used to determine the declination of stellar onjects. It consists of a circular scale kept perpendicular to the rotating axis of a telescope tube.

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